diff --git a/index.js b/index.js
index e965a7a..f9b0df7 100644
--- a/index.js
+++ b/index.js
@@ -1,171 +1,173 @@
 'use strict';
 
+const util = require('util');
 const { Writable } = require('stream');
 const { LEVEL } = require('triple-beam');
 
-module.exports = class TransportStream extends Writable {
-  /**
-   * Constructor function for the TransportStream. This is the base prototype
-   * that all `winston >= 3` transports should inherit from.
-   * @param {Object} options - Options for this TransportStream instance
-   * @param {String} options.level - Highest level according to RFC5424.
-   * @param {Boolean} options.handleExceptions - If true, info with
-   * { exception: true } will be written.
-   * @param {Function} options.log - Custom log function for simple Transport
-   * creation
-   * @param {Function} options.close - Called on "unpipe" from parent.
-   */
-  constructor(options = {}) {
-    super({
-      objectMode: true
-    });
-
-    this.format = options.format;
-    this.level = options.level;
-    this.handleExceptions = options.handleExceptions;
-    this.silent = options.silent;
-
-    if (options.log) {
-      this.log = options.log;
-    }
-    if (options.logv) {
-      this.logv = options.logv;
-    }
-    if (options.close) {
-      this.close = options.close;
-    }
-
-    // Get the levels from the source we are piped from.
-    this.once('pipe', logger => {
-      // Remark (indexzero): this bookkeeping can only support multiple
-      // Logger parents with the same `levels`. This comes into play in
-      // the `winston.Container` code in which `container.add` takes
-      // a fully realized set of options with pre-constructed TransportStreams.
-      this.levels = logger.levels;
-      this.level = this.level || logger.level;
-      this.parent = logger;
-    });
-
-    // If and/or when the transport is removed from this instance
-    this.once('unpipe', src => {
-      // Remark (indexzero): this bookkeeping can only support multiple
-      // Logger parents with the same `levels`. This comes into play in
-      // the `winston.Container` code in which `container.add` takes
-      // a fully realized set of options with pre-constructed TransportStreams.
-      if (src === this.parent) {
-        this.parent = null;
-        if (this.close) {
-          this.close();
-        }
-      }
-    });
+/**
+ * Constructor function for the TransportStream. This is the base prototype
+ * that all `winston >= 3` transports should inherit from.
+ * @param {Object} options - Options for this TransportStream instance
+ * @param {String} options.level - Highest level according to RFC5424.
+ * @param {Boolean} options.handleExceptions - If true, info with
+ * { exception: true } will be written.
+ * @param {Function} options.log - Custom log function for simple Transport
+ * creation
+ * @param {Function} options.close - Called on "unpipe" from parent.
+ */
+const TransportStream = module.exports = function TransportStream(options = {}) {
+  Writable.call(this, { objectMode: true });
+
+  this.format = options.format;
+  this.level = options.level;
+  this.handleExceptions = options.handleExceptions;
+  this.silent = options.silent;
+
+  if (options.log) {
+    this.log = options.log;
+  }
+  if (options.logv) {
+    this.logv = options.logv;
+  }
+  if (options.close) {
+    this.close = options.close;
   }
 
-  /**
-   * Writes the info object to our transport instance.
-   * @param {mixed} info - TODO: add param description.
-   * @param {mixed} enc - TODO: add param description.
-   * @param {function} callback - TODO: add param description.
-   * @returns {undefined}
-   * @private
-   */
-  _write(info, enc, callback) {
-    if (this.silent || (info.exception === true && !this.handleExceptions)) {
-      return callback(null);
-    }
-
-    // Remark: This has to be handled in the base transport now because we
-    // cannot conditionally write to our pipe targets as stream.
-    if (!this.level || this.levels[this.level] >= this.levels[info[LEVEL]]) {
-      info = this.format
-        ? this.format.transform(Object.assign({}, info), this.format.options)
-        : info;
-
-      if (info) {
-        return this.log(info, callback);
+  // Get the levels from the source we are piped from.
+  this.once('pipe', logger => {
+    // Remark (indexzero): this bookkeeping can only support multiple
+    // Logger parents with the same `levels`. This comes into play in
+    // the `winston.Container` code in which `container.add` takes
+    // a fully realized set of options with pre-constructed TransportStreams.
+    this.levels = logger.levels;
+    this.level = this.level || logger.level;
+    this.parent = logger;
+  });
+
+  // If and/or when the transport is removed from this instance
+  this.once('unpipe', src => {
+    // Remark (indexzero): this bookkeeping can only support multiple
+    // Logger parents with the same `levels`. This comes into play in
+    // the `winston.Container` code in which `container.add` takes
+    // a fully realized set of options with pre-constructed TransportStreams.
+    if (src === this.parent) {
+      this.parent = null;
+      if (this.close) {
+        this.close();
       }
     }
+  });
+};
 
+/*
+ * Inherit from Writeable using Node.js built-ins
+ */
+util.inherits(TransportStream, Writable);
+
+/**
+ * Writes the info object to our transport instance.
+ * @param {mixed} info - TODO: add param description.
+ * @param {mixed} enc - TODO: add param description.
+ * @param {function} callback - TODO: add param description.
+ * @returns {undefined}
+ * @private
+ */
+TransportStream.prototype._write = function _write(info, enc, callback) {
+  if (this.silent || (info.exception === true && !this.handleExceptions)) {
     return callback(null);
   }
 
-  /**
-   * Writes the batch of info objects (i.e. "object chunks") to our transport
-   * instance after performing any necessary filtering.
-   * @param {mixed} chunks - TODO: add params description.
-   * @param {function} callback - TODO: add params description.
-   * @returns {mixed} - TODO: add returns description.
-   * @private
-   */
-  _writev(chunks, callback) {
-    if (this.logv) {
-      const infos = chunks.filter(this._accept, this);
-      if (!infos.length) {
-        return callback(null);
-      }
+  // Remark: This has to be handled in the base transport now because we
+  // cannot conditionally write to our pipe targets as stream.
+  if (!this.level || this.levels[this.level] >= this.levels[info[LEVEL]]) {
+    info = this.format
+      ? this.format.transform(Object.assign({}, info), this.format.options)
+      : info;
 
-      // Remark (indexzero): from a performance perspective if Transport
-      // implementers do choose to implement logv should we make it their
-      // responsibility to invoke their format?
-      return this.logv(infos, callback);
+    if (info) {
+      return this.log(info, callback);
     }
+  }
 
-    for (let i = 0; i < chunks.length; i++) {
-      if (this._accept(chunks[i])) {
-        const info = this.format
-          ? this.format.transform(
-            Object.assign({}, chunks[i].chunk),
-            this.format.options
-          )
-          : chunks[i].chunk;
-
-        if (info) {
-          this.log(info, chunks[i].callback);
-        }
-      }
+  return callback(null);
+};
+
+/**
+ * Writes the batch of info objects (i.e. "object chunks") to our transport
+ * instance after performing any necessary filtering.
+ * @param {mixed} chunks - TODO: add params description.
+ * @param {function} callback - TODO: add params description.
+ * @returns {mixed} - TODO: add returns description.
+ * @private
+ */
+TransportStream.prototype._writev = function _writev(chunks, callback) {
+  if (this.logv) {
+    const infos = chunks.filter(this._accept, this);
+    if (!infos.length) {
+      return callback(null);
     }
 
-    return callback(null);
+    // Remark (indexzero): from a performance perspective if Transport
+    // implementers do choose to implement logv should we make it their
+    // responsibility to invoke their format?
+    return this.logv(infos, callback);
   }
 
-  /**
-   * Predicate function that returns true if the specfied `info` on the
-   * WriteReq, `write`, should be passed down into the derived
-   * TransportStream's I/O via `.log(info, callback)`.
-   * @param {WriteReq} write - winston@3 Node.js WriteReq for the `info` object
-   * representing the log message.
-   * @returns {Boolean} - Value indicating if the `write` should be accepted &
-   * logged.
-   */
-  _accept(write) {
-    const info = write.chunk;
-    if (this.silent) {
-      return false;
-    }
+  for (let i = 0; i < chunks.length; i++) {
+    if (this._accept(chunks[i])) {
+      const info = this.format
+        ? this.format.transform(
+          Object.assign({}, chunks[i].chunk),
+          this.format.options
+        )
+        : chunks[i].chunk;
 
-    // Immediately check the average case: log level filtering.
-    if (
-      info.exception === true ||
-      !this.level ||
-      this.levels[this.level] >= this.levels[info[LEVEL]]
-    ) {
-      // Ensure the info object is valid based on `{ exception }`:
-      // 1. { handleExceptions: true }: all `info` objects are valid
-      // 2. { exception: false }: accepted by all transports.
-      if (this.handleExceptions || info.exception !== true) {
-        return true;
+      if (info) {
+        this.log(info, chunks[i].callback);
       }
     }
+  }
+
+  return callback(null);
+};
 
+/**
+ * Predicate function that returns true if the specfied `info` on the
+ * WriteReq, `write`, should be passed down into the derived
+ * TransportStream's I/O via `.log(info, callback)`.
+ * @param {WriteReq} write - winston@3 Node.js WriteReq for the `info` object
+ * representing the log message.
+ * @returns {Boolean} - Value indicating if the `write` should be accepted &
+ * logged.
+ */
+TransportStream.prototype._accept = function _accept(write) {
+  const info = write.chunk;
+  if (this.silent) {
     return false;
   }
 
-  /**
-   * _nop is short for "No operation"
-   * @returns {Boolean} Intentionally false.
-   */
-  _nop() {
-    // eslint-disable-next-line no-undefined
-    return void undefined;
+  // Immediately check the average case: log level filtering.
+  if (
+    info.exception === true ||
+    !this.level ||
+    this.levels[this.level] >= this.levels[info[LEVEL]]
+  ) {
+    // Ensure the info object is valid based on `{ exception }`:
+    // 1. { handleExceptions: true }: all `info` objects are valid
+    // 2. { exception: false }: accepted by all transports.
+    if (this.handleExceptions || info.exception !== true) {
+      return true;
+    }
   }
+
+  return false;
+};
+
+/**
+ * _nop is short for "No operation"
+ * @returns {Boolean} Intentionally false.
+ */
+TransportStream.prototype._nop = function _nop() {
+  // eslint-disable-next-line no-undefined
+  return void undefined;
 };
diff --git a/legacy.js b/legacy.js
index c284e9a..8025bc9 100644
--- a/legacy.js
+++ b/legacy.js
@@ -1,115 +1,119 @@
 'use strict';
 
-const TransportStream = require('./');
+const util = require('util');
 const { LEVEL } = require('triple-beam');
+const TransportStream = require('./');
 
-module.exports = class LegacyTransportStream extends TransportStream {
-  /**
-   * Constructor function for the LegacyTransportStream. This is an internal
-   * wrapper `winston >= 3` uses to wrap older transports implementing
-   * log(level, message, meta).
-   * @param {Object} options - Options for this TransportStream instance.
-   * @param {Transpot} options.transport - winston@2 or older Transport to wrap.
-   */
-  constructor(options = {}) {
-    super(options);
-    if (!options.transport || typeof options.transport.log !== 'function') {
-      throw new Error('Invalid transport, must be an object with a log method.');
-    }
-
-    this.transport = options.transport;
-    this.level = this.level || options.transport.level;
-    this.handleExceptions = this.handleExceptions || options.transport.handleExceptions;
-
-    // Display our deprecation notice.
-    this._deprecated();
-
-    // Properly bubble up errors from the transport to the
-    // LegacyTransportStream instance, but only once no matter how many times
-    // this transport is shared.
-    function transportError(err) {
-      this.emit('error', err, this.transport);
-    }
+/**
+ * Constructor function for the LegacyTransportStream. This is an internal
+ * wrapper `winston >= 3` uses to wrap older transports implementing
+ * log(level, message, meta).
+ * @param {Object} options - Options for this TransportStream instance.
+ * @param {Transpot} options.transport - winston@2 or older Transport to wrap.
+ */
 
-    if (!this.transport.__winstonError) {
-      this.transport.__winstonError = transportError.bind(this);
-      this.transport.on('error', this.transport.__winstonError);
-    }
+const LegacyTransportStream = module.exports = function LegacyTransportStream(options = {}) {
+  TransportStream.call(this, options);
+  if (!options.transport || typeof options.transport.log !== 'function') {
+    throw new Error('Invalid transport, must be an object with a log method.');
   }
 
+  this.transport = options.transport;
+  this.level = this.level || options.transport.level;
+  this.handleExceptions = this.handleExceptions || options.transport.handleExceptions;
 
-  /**
-   * Writes the info object to our transport instance.
-   * @param {mixed} info - TODO: add param description.
-   * @param {mixed} enc - TODO: add param description.
-   * @param {function} callback - TODO: add param description.
-   * @returns {undefined}
-   * @private
-   */
-  _write(info, enc, callback) {
-    if (this.silent || (info.exception === true && !this.handleExceptions)) {
-      return callback(null);
-    }
+  // Display our deprecation notice.
+  this._deprecated();
 
-    // Remark: This has to be handled in the base transport now because we
-    // cannot conditionally write to our pipe targets as stream.
-    if (!this.level || this.levels[this.level] >= this.levels[info[LEVEL]]) {
-      this.transport.log(info[LEVEL], info.message, info, this._nop);
-    }
+  // Properly bubble up errors from the transport to the
+  // LegacyTransportStream instance, but only once no matter how many times
+  // this transport is shared.
+  function transportError(err) {
+    this.emit('error', err, this.transport);
+  }
 
-    callback(null);
+  if (!this.transport.__winstonError) {
+    this.transport.__winstonError = transportError.bind(this);
+    this.transport.on('error', this.transport.__winstonError);
   }
+};
 
-  /**
-   * Writes the batch of info objects (i.e. "object chunks") to our transport
-   * instance after performing any necessary filtering.
-   * @param {mixed} chunks - TODO: add params description.
-   * @param {function} callback - TODO: add params description.
-   * @returns {mixed} - TODO: add returns description.
-   * @private
-   */
-  _writev(chunks, callback) {
-    for (let i = 0; i < chunks.length; i++) {
-      if (this._accept(chunks[i])) {
-        this.transport.log(
-          chunks[i].chunk[LEVEL],
-          chunks[i].chunk.message,
-          chunks[i].chunk,
-          this._nop
-        );
-        chunks[i].callback();
-      }
-    }
+/*
+ * Inherit from TransportStream using Node.js built-ins
+ */
+util.inherits(LegacyTransportStream, TransportStream);
 
+/**
+ * Writes the info object to our transport instance.
+ * @param {mixed} info - TODO: add param description.
+ * @param {mixed} enc - TODO: add param description.
+ * @param {function} callback - TODO: add param description.
+ * @returns {undefined}
+ * @private
+ */
+LegacyTransportStream.prototype._write = function _write(info, enc, callback) {
+  if (this.silent || (info.exception === true && !this.handleExceptions)) {
     return callback(null);
   }
 
-  /**
-   * Displays a deprecation notice. Defined as a function so it can be
-   * overriden in tests.
-   * @returns {undefined}
-   */
-  _deprecated() {
-    // eslint-disable-next-line no-console
-    console.error([
-      `${this.transport.name} is a legacy winston transport. Consider upgrading: `,
-      '- Upgrade docs: https://github.com/winstonjs/winston/blob/master/UPGRADE-3.0.md'
-    ].join('\n'));
+  // Remark: This has to be handled in the base transport now because we
+  // cannot conditionally write to our pipe targets as stream.
+  if (!this.level || this.levels[this.level] >= this.levels[info[LEVEL]]) {
+    this.transport.log(info[LEVEL], info.message, info, this._nop);
   }
 
-  /**
-   * Clean up error handling state on the legacy transport associated
-   * with this instance.
-   * @returns {undefined}
-   */
-  close() {
-    if (this.transport.close) {
-      this.transport.close();
-    }
+  callback(null);
+};
 
-    if (this.transport.__winstonError) {
-      this.transport.removeListener('error', this.transport.__winstonError);
-      this.transport.__winstonError = null;
+/**
+ * Writes the batch of info objects (i.e. "object chunks") to our transport
+ * instance after performing any necessary filtering.
+ * @param {mixed} chunks - TODO: add params description.
+ * @param {function} callback - TODO: add params description.
+ * @returns {mixed} - TODO: add returns description.
+ * @private
+ */
+LegacyTransportStream.prototype._writev = function _writev(chunks, callback) {
+  for (let i = 0; i < chunks.length; i++) {
+    if (this._accept(chunks[i])) {
+      this.transport.log(
+        chunks[i].chunk[LEVEL],
+        chunks[i].chunk.message,
+        chunks[i].chunk,
+        this._nop
+      );
+      chunks[i].callback();
     }
   }
+
+  return callback(null);
+};
+
+/**
+ * Displays a deprecation notice. Defined as a function so it can be
+ * overriden in tests.
+ * @returns {undefined}
+ */
+LegacyTransportStream.prototype._deprecated = function _deprecated() {
+  // eslint-disable-next-line no-console
+  console.error([
+    `${this.transport.name} is a legacy winston transport. Consider upgrading: `,
+    '- Upgrade docs: https://github.com/winstonjs/winston/blob/master/UPGRADE-3.0.md'
+  ].join('\n'));
+};
+
+/**
+ * Clean up error handling state on the legacy transport associated
+ * with this instance.
+ * @returns {undefined}
+ */
+LegacyTransportStream.prototype.close = function close() {
+  if (this.transport.close) {
+    this.transport.close();
+  }
+
+  if (this.transport.__winstonError) {
+    this.transport.removeListener('error', this.transport.__winstonError);
+    this.transport.__winstonError = null;
+  }
 };
diff --git a/package-lock.json b/package-lock.json
index 3ecda61..e613049 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "@types/node": {
-      "version": "9.6.18",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-9.6.18.tgz",
-      "integrity": "sha512-lywCnJQRSsu0kitHQ5nkb7Ay/ScdJPQjhWRtuf+G1DmNKJnPcdVyP0pYvdiDFKjzReC6NLWLgSyimno3kKfIig==",
+      "version": "10.1.4",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-10.1.4.tgz",
+      "integrity": "sha512-GpQxofkdlHYxjHad98UUdNoMO7JrmzQZoAaghtNg14Gwg7YkohcrCoJEcEMSgllx4VIZ+mYw7ZHjfaeIagP/rg==",
       "dev": true
     },
     "abstract-winston-transport": {
@@ -16,7 +16,7 @@
       "integrity": "sha1-EpaFtsi5KClpXS2retlc1LkPRBs=",
       "dev": true,
       "requires": {
-        "diagnostics": "1.1.0"
+        "diagnostics": "^1.1.0"
       }
     },
     "acorn": {
@@ -31,7 +31,7 @@
       "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
       "dev": true,
       "requires": {
-        "acorn": "3.3.0"
+        "acorn": "^3.0.4"
       },
       "dependencies": {
         "acorn": {
@@ -48,10 +48,10 @@
       "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
       "dev": true,
       "requires": {
-        "co": "4.6.0",
-        "fast-deep-equal": "1.1.0",
-        "fast-json-stable-stringify": "2.0.0",
-        "json-schema-traverse": "0.3.1"
+        "co": "^4.6.0",
+        "fast-deep-equal": "^1.0.0",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.3.0"
       }
     },
     "ajv-keywords": {
@@ -84,7 +84,7 @@
       "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
       "dev": true,
       "requires": {
-        "sprintf-js": "1.0.3"
+        "sprintf-js": "~1.0.2"
       }
     },
     "array-union": {
@@ -93,7 +93,7 @@
       "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
       "dev": true,
       "requires": {
-        "array-uniq": "1.0.3"
+        "array-uniq": "^1.0.1"
       }
     },
     "array-uniq": {
@@ -109,16 +109,17 @@
       "dev": true
     },
     "assume": {
-      "version": "1.5.2",
-      "resolved": "https://registry.npmjs.org/assume/-/assume-1.5.2.tgz",
-      "integrity": "sha512-/IDWcpPTGjUsf4lcMi837n3xFxkEBVEfVxOvYUgdU3y6FjWSWzXiUzFAYlulr94kr79mNbiOFC5isJmaQn2C2w==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/assume/-/assume-2.0.1.tgz",
+      "integrity": "sha1-/CEmqq8ljM580WcusJUV/1FAibU=",
       "dev": true,
       "requires": {
-        "deep-eql": "0.1.3",
-        "fn.name": "1.0.1",
-        "object-inspect": "1.0.2",
-        "pathval": "0.1.1",
-        "pruddy-error": "1.0.2"
+        "deep-eql": "^3.0.1",
+        "fn.name": "^1.0.1",
+        "is-buffer": "^2.0.0",
+        "object-inspect": "^1.5.0",
+        "propget": "^1.1.0",
+        "pruddy-error": "^2.0.2"
       }
     },
     "babel-code-frame": {
@@ -127,9 +128,9 @@
       "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
       "dev": true,
       "requires": {
-        "chalk": "1.1.3",
-        "esutils": "2.0.2",
-        "js-tokens": "3.0.2"
+        "chalk": "^1.1.3",
+        "esutils": "^2.0.2",
+        "js-tokens": "^3.0.2"
       },
       "dependencies": {
         "chalk": {
@@ -138,11 +139,11 @@
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
-            "ansi-styles": "2.2.1",
-            "escape-string-regexp": "1.0.5",
-            "has-ansi": "2.0.0",
-            "strip-ansi": "3.0.1",
-            "supports-color": "2.0.0"
+            "ansi-styles": "^2.2.1",
+            "escape-string-regexp": "^1.0.2",
+            "has-ansi": "^2.0.0",
+            "strip-ansi": "^3.0.0",
+            "supports-color": "^2.0.0"
           }
         },
         "strip-ansi": {
@@ -151,7 +152,7 @@
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
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@@ -1601,10 +1620,10 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "babel-runtime": "6.26.0",
-            "esutils": "2.0.2",
-            "lodash": "4.17.10",
-            "to-fast-properties": "1.0.3"
+            "babel-runtime": "^6.26.0",
+            "esutils": "^2.0.2",
+            "lodash": "^4.17.4",
+            "to-fast-properties": "^1.0.3"
           }
         },
         "babylon": {
@@ -1622,13 +1641,13 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "cache-base": "1.0.1",
-            "class-utils": "0.3.6",
-            "component-emitter": "1.2.1",
-            "define-property": "1.0.0",
-            "isobject": "3.0.1",
-            "mixin-deep": "1.3.1",
-            "pascalcase": "0.1.1"
+            "cache-base": "^1.0.1",
+            "class-utils": "^0.3.5",
+            "component-emitter": "^1.2.1",
+            "define-property": "^1.0.0",
+            "isobject": "^3.0.1",
+            "mixin-deep": "^1.2.0",
+            "pascalcase": "^0.1.1"
           },
           "dependencies": {
             "define-property": {
@@ -1636,7 +1655,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-descriptor": "1.0.2"
+                "is-descriptor": "^1.0.0"
               }
             },
             "is-accessor-descriptor": {
@@ -1644,7 +1663,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
             },
             "is-data-descriptor": {
@@ -1652,7 +1671,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
             },
             "is-descriptor": {
@@ -1660,9 +1679,9 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-accessor-descriptor": "1.0.0",
-                "is-data-descriptor": "1.0.0",
-                "kind-of": "6.0.2"
+                "is-accessor-descriptor": "^1.0.0",
+                "is-data-descriptor": "^1.0.0",
+                "kind-of": "^6.0.2"
               }
             },
             "isobject": {
@@ -1682,7 +1701,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "balanced-match": "1.0.0",
+            "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
           }
         },
@@ -1691,16 +1710,16 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "arr-flatten": "1.1.0",
-            "array-unique": "0.3.2",
-            "extend-shallow": "2.0.1",
-            "fill-range": "4.0.0",
-            "isobject": "3.0.1",
-            "repeat-element": "1.1.2",
-            "snapdragon": "0.8.2",
-            "snapdragon-node": "2.1.1",
-            "split-string": "3.1.0",
-            "to-regex": "3.0.2"
+            "arr-flatten": "^1.1.0",
+            "array-unique": "^0.3.2",
+            "extend-shallow": "^2.0.1",
+            "fill-range": "^4.0.0",
+            "isobject": "^3.0.1",
+            "repeat-element": "^1.1.2",
+            "snapdragon": "^0.8.1",
+            "snapdragon-node": "^2.0.1",
+            "split-string": "^3.0.2",
+            "to-regex": "^3.0.1"
           },
           "dependencies": {
             "extend-shallow": {
@@ -1708,7 +1727,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-extendable": "0.1.1"
+                "is-extendable": "^0.1.0"
               }
             }
           }
@@ -1723,15 +1742,15 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "collection-visit": "1.0.0",
-            "component-emitter": "1.2.1",
-            "get-value": "2.0.6",
-            "has-value": "1.0.0",
-            "isobject": "3.0.1",
-            "set-value": "2.0.0",
-            "to-object-path": "0.3.0",
-            "union-value": "1.0.0",
-            "unset-value": "1.0.0"
+            "collection-visit": "^1.0.0",
+            "component-emitter": "^1.2.1",
+            "get-value": "^2.0.6",
+            "has-value": "^1.0.0",
+            "isobject": "^3.0.1",
+            "set-value": "^2.0.0",
+            "to-object-path": "^0.3.0",
+            "union-value": "^1.0.0",
+            "unset-value": "^1.0.0"
           },
           "dependencies": {
             "isobject": {
@@ -1746,9 +1765,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "md5-hex": "1.3.0",
-            "mkdirp": "0.5.1",
-            "write-file-atomic": "1.3.4"
+            "md5-hex": "^1.2.0",
+            "mkdirp": "^0.5.1",
+            "write-file-atomic": "^1.1.4"
           }
         },
         "camelcase": {
@@ -1763,8 +1782,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "align-text": "0.1.4",
-            "lazy-cache": "1.0.4"
+            "align-text": "^0.1.3",
+            "lazy-cache": "^1.0.3"
           }
         },
         "chalk": {
@@ -1772,11 +1791,11 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "ansi-styles": "2.2.1",
-            "escape-string-regexp": "1.0.5",
-            "has-ansi": "2.0.0",
-            "strip-ansi": "3.0.1",
-            "supports-color": "2.0.0"
+            "ansi-styles": "^2.2.1",
+            "escape-string-regexp": "^1.0.2",
+            "has-ansi": "^2.0.0",
+            "strip-ansi": "^3.0.0",
+            "supports-color": "^2.0.0"
           }
         },
         "class-utils": {
@@ -1784,10 +1803,10 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "arr-union": "3.1.0",
-            "define-property": "0.2.5",
-            "isobject": "3.0.1",
-            "static-extend": "0.1.2"
+            "arr-union": "^3.1.0",
+            "define-property": "^0.2.5",
+            "isobject": "^3.0.0",
+            "static-extend": "^0.1.1"
           },
           "dependencies": {
             "define-property": {
@@ -1795,7 +1814,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-descriptor": "0.1.6"
+                "is-descriptor": "^0.1.0"
               }
             },
             "isobject": {
@@ -1811,8 +1830,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "center-align": "0.1.3",
-            "right-align": "0.1.3",
+            "center-align": "^0.1.1",
+            "right-align": "^0.1.1",
             "wordwrap": "0.0.2"
           },
           "dependencies": {
@@ -1834,8 +1853,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "map-visit": "1.0.0",
-            "object-visit": "1.0.1"
+            "map-visit": "^1.0.0",
+            "object-visit": "^1.0.0"
           }
         },
         "commondir": {
@@ -1873,8 +1892,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "lru-cache": "4.1.3",
-            "which": "1.3.0"
+            "lru-cache": "^4.0.1",
+            "which": "^1.2.9"
           }
         },
         "debug": {
@@ -1905,7 +1924,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "strip-bom": "2.0.0"
+            "strip-bom": "^2.0.0"
           }
         },
         "define-property": {
@@ -1913,8 +1932,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-descriptor": "1.0.2",
-            "isobject": "3.0.1"
+            "is-descriptor": "^1.0.2",
+            "isobject": "^3.0.1"
           },
           "dependencies": {
             "is-accessor-descriptor": {
@@ -1922,7 +1941,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
             },
             "is-data-descriptor": {
@@ -1930,7 +1949,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
             },
             "is-descriptor": {
@@ -1938,9 +1957,9 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-accessor-descriptor": "1.0.0",
-                "is-data-descriptor": "1.0.0",
-                "kind-of": "6.0.2"
+                "is-accessor-descriptor": "^1.0.0",
+                "is-data-descriptor": "^1.0.0",
+                "kind-of": "^6.0.2"
               }
             },
             "isobject": {
@@ -1960,7 +1979,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "repeating": "2.0.1"
+            "repeating": "^2.0.0"
           }
         },
         "error-ex": {
@@ -1968,7 +1987,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-arrayish": "0.2.1"
+            "is-arrayish": "^0.2.1"
           }
         },
         "escape-string-regexp": {
@@ -1986,13 +2005,13 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "cross-spawn": "5.1.0",
-            "get-stream": "3.0.0",
-            "is-stream": "1.1.0",
-            "npm-run-path": "2.0.2",
-            "p-finally": "1.0.0",
-            "signal-exit": "3.0.2",
-            "strip-eof": "1.0.0"
+            "cross-spawn": "^5.0.1",
+            "get-stream": "^3.0.0",
+            "is-stream": "^1.1.0",
+            "npm-run-path": "^2.0.0",
+            "p-finally": "^1.0.0",
+            "signal-exit": "^3.0.0",
+            "strip-eof": "^1.0.0"
           },
           "dependencies": {
             "cross-spawn": {
@@ -2000,9 +2019,9 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "lru-cache": "4.1.3",
-                "shebang-command": "1.2.0",
-                "which": "1.3.0"
+                "lru-cache": "^4.0.1",
+                "shebang-command": "^1.2.0",
+                "which": "^1.2.9"
               }
             }
           }
@@ -2012,13 +2031,13 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "debug": "2.6.9",
-            "define-property": "0.2.5",
-            "extend-shallow": "2.0.1",
-            "posix-character-classes": "0.1.1",
-            "regex-not": "1.0.2",
-            "snapdragon": "0.8.2",
-            "to-regex": "3.0.2"
+            "debug": "^2.3.3",
+            "define-property": "^0.2.5",
+            "extend-shallow": "^2.0.1",
+            "posix-character-classes": "^0.1.0",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.1"
           },
           "dependencies": {
             "define-property": {
@@ -2026,7 +2045,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-descriptor": "0.1.6"
+                "is-descriptor": "^0.1.0"
               }
             },
             "extend-shallow": {
@@ -2034,7 +2053,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-extendable": "0.1.1"
+                "is-extendable": "^0.1.0"
               }
             }
           }
@@ -2044,8 +2063,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "assign-symbols": "1.0.0",
-            "is-extendable": "1.0.1"
+            "assign-symbols": "^1.0.0",
+            "is-extendable": "^1.0.1"
           },
           "dependencies": {
             "is-extendable": {
@@ -2053,7 +2072,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-plain-object": "2.0.4"
+                "is-plain-object": "^2.0.4"
               }
             }
           }
@@ -2063,14 +2082,14 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "array-unique": "0.3.2",
-            "define-property": "1.0.0",
-            "expand-brackets": "2.1.4",
-            "extend-shallow": "2.0.1",
-            "fragment-cache": "0.2.1",
-            "regex-not": "1.0.2",
-            "snapdragon": "0.8.2",
-            "to-regex": "3.0.2"
+            "array-unique": "^0.3.2",
+            "define-property": "^1.0.0",
+            "expand-brackets": "^2.1.4",
+            "extend-shallow": "^2.0.1",
+            "fragment-cache": "^0.2.1",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.1"
           },
           "dependencies": {
             "define-property": {
@@ -2078,7 +2097,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-descriptor": "1.0.2"
+                "is-descriptor": "^1.0.0"
               }
             },
             "extend-shallow": {
@@ -2086,7 +2105,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-extendable": "0.1.1"
+                "is-extendable": "^0.1.0"
               }
             },
             "is-accessor-descriptor": {
@@ -2094,7 +2113,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
             },
             "is-data-descriptor": {
@@ -2102,7 +2121,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
             },
             "is-descriptor": {
@@ -2110,9 +2129,9 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-accessor-descriptor": "1.0.0",
-                "is-data-descriptor": "1.0.0",
-                "kind-of": "6.0.2"
+                "is-accessor-descriptor": "^1.0.0",
+                "is-data-descriptor": "^1.0.0",
+                "kind-of": "^6.0.2"
               }
             },
             "kind-of": {
@@ -2127,10 +2146,10 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "extend-shallow": "2.0.1",
-            "is-number": "3.0.0",
-            "repeat-string": "1.6.1",
-            "to-regex-range": "2.1.1"
+            "extend-shallow": "^2.0.1",
+            "is-number": "^3.0.0",
+            "repeat-string": "^1.6.1",
+            "to-regex-range": "^2.1.0"
           },
           "dependencies": {
             "extend-shallow": {
@@ -2138,7 +2157,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-extendable": "0.1.1"
+                "is-extendable": "^0.1.0"
               }
             }
           }
@@ -2148,9 +2167,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "commondir": "1.0.1",
-            "mkdirp": "0.5.1",
-            "pkg-dir": "1.0.0"
+            "commondir": "^1.0.1",
+            "mkdirp": "^0.5.1",
+            "pkg-dir": "^1.0.0"
           }
         },
         "find-up": {
@@ -2158,7 +2177,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "locate-path": "2.0.0"
+            "locate-path": "^2.0.0"
           }
         },
         "for-in": {
@@ -2171,8 +2190,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "cross-spawn": "4.0.2",
-            "signal-exit": "3.0.2"
+            "cross-spawn": "^4",
+            "signal-exit": "^3.0.0"
           }
         },
         "fragment-cache": {
@@ -2180,7 +2199,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "map-cache": "0.2.2"
+            "map-cache": "^0.2.2"
           }
         },
         "fs.realpath": {
@@ -2208,12 +2227,12 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "fs.realpath": "1.0.0",
-            "inflight": "1.0.6",
-            "inherits": "2.0.3",
-            "minimatch": "3.0.4",
-            "once": "1.4.0",
-            "path-is-absolute": "1.0.1"
+            "fs.realpath": "^1.0.0",
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "^3.0.4",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
           }
         },
         "globals": {
@@ -2231,10 +2250,10 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "async": "1.5.2",
-            "optimist": "0.6.1",
-            "source-map": "0.4.4",
-            "uglify-js": "2.8.29"
+            "async": "^1.4.0",
+            "optimist": "^0.6.1",
+            "source-map": "^0.4.4",
+            "uglify-js": "^2.6"
           },
           "dependencies": {
             "source-map": {
@@ -2242,7 +2261,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "amdefine": "1.0.1"
+                "amdefine": ">=0.0.4"
               }
             }
           }
@@ -2252,7 +2271,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
           }
         },
         "has-flag": {
@@ -2265,9 +2284,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "get-value": "2.0.6",
-            "has-values": "1.0.0",
-            "isobject": "3.0.1"
+            "get-value": "^2.0.6",
+            "has-values": "^1.0.0",
+            "isobject": "^3.0.0"
           },
           "dependencies": {
             "isobject": {
@@ -2282,8 +2301,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-number": "3.0.0",
-            "kind-of": "4.0.0"
+            "is-number": "^3.0.0",
+            "kind-of": "^4.0.0"
           },
           "dependencies": {
             "is-number": {
@@ -2291,7 +2310,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "3.2.2"
+                "kind-of": "^3.0.2"
               },
               "dependencies": {
                 "kind-of": {
@@ -2299,7 +2318,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "is-buffer": "1.1.6"
+                    "is-buffer": "^1.1.5"
                   }
                 }
               }
@@ -2309,7 +2328,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-buffer": "1.1.6"
+                "is-buffer": "^1.1.5"
               }
             }
           }
@@ -2329,8 +2348,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "once": "1.4.0",
-            "wrappy": "1.0.2"
+            "once": "^1.3.0",
+            "wrappy": "1"
           }
         },
         "inherits": {
@@ -2343,7 +2362,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "loose-envify": "1.3.1"
+            "loose-envify": "^1.0.0"
           }
         },
         "invert-kv": {
@@ -2356,7 +2375,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "kind-of": "3.2.2"
+            "kind-of": "^3.0.2"
           }
         },
         "is-arrayish": {
@@ -2374,7 +2393,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "builtin-modules": "1.1.1"
+            "builtin-modules": "^1.0.0"
           }
         },
         "is-data-descriptor": {
@@ -2382,7 +2401,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "kind-of": "3.2.2"
+            "kind-of": "^3.0.2"
           }
         },
         "is-descriptor": {
@@ -2390,9 +2409,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-accessor-descriptor": "0.1.6",
-            "is-data-descriptor": "0.1.4",
-            "kind-of": "5.1.0"
+            "is-accessor-descriptor": "^0.1.6",
+            "is-data-descriptor": "^0.1.4",
+            "kind-of": "^5.0.0"
           },
           "dependencies": {
             "kind-of": {
@@ -2412,7 +2431,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
           }
         },
         "is-fullwidth-code-point": {
@@ -2425,7 +2444,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "kind-of": "3.2.2"
+            "kind-of": "^3.0.2"
           }
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@@ -2433,7 +2452,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-number": "4.0.0"
+            "is-number": "^4.0.0"
           },
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@@ -2448,7 +2467,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "isobject": "3.0.1"
+            "isobject": "^3.0.1"
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@@ -2498,7 +2517,7 @@
           "bundled": true,
           "dev": true,
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-            "append-transform": "0.4.0"
+            "append-transform": "^0.4.0"
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@@ -2506,13 +2525,13 @@
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           "dev": true,
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-            "babel-template": "6.26.0",
-            "babel-traverse": "6.26.0",
-            "babel-types": "6.26.0",
-            "babylon": "6.18.0",
-            "istanbul-lib-coverage": "1.2.0",
-            "semver": "5.5.0"
+            "babel-generator": "^6.18.0",
+            "babel-template": "^6.16.0",
+            "babel-traverse": "^6.18.0",
+            "babel-types": "^6.18.0",
+            "babylon": "^6.18.0",
+            "istanbul-lib-coverage": "^1.2.0",
+            "semver": "^5.3.0"
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@@ -2520,10 +2539,10 @@
           "bundled": true,
           "dev": true,
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-            "mkdirp": "0.5.1",
-            "path-parse": "1.0.5",
-            "supports-color": "3.2.3"
+            "istanbul-lib-coverage": "^1.1.2",
+            "mkdirp": "^0.5.1",
+            "path-parse": "^1.0.5",
+            "supports-color": "^3.1.2"
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@@ -2531,7 +2550,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "has-flag": "1.0.0"
+                "has-flag": "^1.0.0"
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@@ -2541,11 +2560,11 @@
           "bundled": true,
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-            "mkdirp": "0.5.1",
-            "rimraf": "2.6.2",
-            "source-map": "0.5.7"
+            "debug": "^3.1.0",
+            "istanbul-lib-coverage": "^1.1.2",
+            "mkdirp": "^0.5.1",
+            "rimraf": "^2.6.1",
+            "source-map": "^0.5.3"
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@@ -2563,7 +2582,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "handlebars": "4.0.11"
+            "handlebars": "^4.0.3"
           }
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         "js-tokens": {
@@ -2581,7 +2600,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-buffer": "1.1.6"
+            "is-buffer": "^1.1.5"
           }
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@@ -2595,7 +2614,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "invert-kv": "1.0.0"
+            "invert-kv": "^1.0.0"
           }
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         "load-json-file": {
@@ -2603,11 +2622,11 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "graceful-fs": "4.1.11",
-            "parse-json": "2.2.0",
-            "pify": "2.3.0",
-            "pinkie-promise": "2.0.1",
-            "strip-bom": "2.0.0"
+            "graceful-fs": "^4.1.2",
+            "parse-json": "^2.2.0",
+            "pify": "^2.0.0",
+            "pinkie-promise": "^2.0.0",
+            "strip-bom": "^2.0.0"
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@@ -2615,8 +2634,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "p-locate": "2.0.0",
-            "path-exists": "3.0.0"
+            "p-locate": "^2.0.0",
+            "path-exists": "^3.0.0"
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             "path-exists": {
@@ -2641,7 +2660,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "js-tokens": "3.0.2"
+            "js-tokens": "^3.0.0"
           }
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@@ -2649,8 +2668,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "pseudomap": "1.0.2",
-            "yallist": "2.1.2"
+            "pseudomap": "^1.0.2",
+            "yallist": "^2.1.2"
           }
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         "map-cache": {
@@ -2663,7 +2682,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "object-visit": "1.0.1"
+            "object-visit": "^1.0.0"
           }
         },
         "md5-hex": {
@@ -2671,7 +2690,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "md5-o-matic": "0.1.1"
+            "md5-o-matic": "^0.1.1"
           }
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         "md5-o-matic": {
@@ -2684,7 +2703,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "mimic-fn": "1.2.0"
+            "mimic-fn": "^1.0.0"
           }
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         "merge-source-map": {
@@ -2692,7 +2711,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "source-map": "0.6.1"
+            "source-map": "^0.6.1"
           },
           "dependencies": {
             "source-map": {
@@ -2707,19 +2726,19 @@
           "bundled": true,
           "dev": true,
           "requires": {
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-            "array-unique": "0.3.2",
-            "braces": "2.3.2",
-            "define-property": "2.0.2",
-            "extend-shallow": "3.0.2",
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-            "fragment-cache": "0.2.1",
-            "kind-of": "6.0.2",
-            "nanomatch": "1.2.9",
-            "object.pick": "1.3.0",
-            "regex-not": "1.0.2",
-            "snapdragon": "0.8.2",
-            "to-regex": "3.0.2"
+            "arr-diff": "^4.0.0",
+            "array-unique": "^0.3.2",
+            "braces": "^2.3.1",
+            "define-property": "^2.0.2",
+            "extend-shallow": "^3.0.2",
+            "extglob": "^2.0.4",
+            "fragment-cache": "^0.2.1",
+            "kind-of": "^6.0.2",
+            "nanomatch": "^1.2.9",
+            "object.pick": "^1.3.0",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.2"
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           "dependencies": {
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@@ -2739,7 +2758,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "brace-expansion": "1.1.11"
+            "brace-expansion": "^1.1.7"
           }
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         "minimist": {
@@ -2752,8 +2771,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "for-in": "1.0.2",
-            "is-extendable": "1.0.1"
+            "for-in": "^1.0.2",
+            "is-extendable": "^1.0.1"
           },
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@@ -2761,7 +2780,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-plain-object": "2.0.4"
+                "is-plain-object": "^2.0.4"
               }
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@@ -2784,18 +2803,18 @@
           "bundled": true,
           "dev": true,
           "requires": {
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-            "array-unique": "0.3.2",
-            "define-property": "2.0.2",
-            "extend-shallow": "3.0.2",
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-            "is-odd": "2.0.0",
-            "is-windows": "1.0.2",
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-            "regex-not": "1.0.2",
-            "snapdragon": "0.8.2",
-            "to-regex": "3.0.2"
+            "arr-diff": "^4.0.0",
+            "array-unique": "^0.3.2",
+            "define-property": "^2.0.2",
+            "extend-shallow": "^3.0.2",
+            "fragment-cache": "^0.2.1",
+            "is-odd": "^2.0.0",
+            "is-windows": "^1.0.2",
+            "kind-of": "^6.0.2",
+            "object.pick": "^1.3.0",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.1"
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@@ -2820,10 +2839,10 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "hosted-git-info": "2.6.0",
-            "is-builtin-module": "1.0.0",
-            "semver": "5.5.0",
-            "validate-npm-package-license": "3.0.3"
+            "hosted-git-info": "^2.1.4",
+            "is-builtin-module": "^1.0.0",
+            "semver": "2 || 3 || 4 || 5",
+            "validate-npm-package-license": "^3.0.1"
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         "npm-run-path": {
@@ -2831,7 +2850,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "path-key": "2.0.1"
+            "path-key": "^2.0.0"
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@@ -2849,9 +2868,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "copy-descriptor": "0.1.1",
-            "define-property": "0.2.5",
-            "kind-of": "3.2.2"
+            "copy-descriptor": "^0.1.0",
+            "define-property": "^0.2.5",
+            "kind-of": "^3.0.3"
           },
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@@ -2859,7 +2878,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-descriptor": "0.1.6"
+                "is-descriptor": "^0.1.0"
               }
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@@ -2869,7 +2888,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "isobject": "3.0.1"
+            "isobject": "^3.0.0"
           },
           "dependencies": {
             "isobject": {
@@ -2884,7 +2903,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "isobject": "3.0.1"
+            "isobject": "^3.0.1"
           },
           "dependencies": {
             "isobject": {
@@ -2899,7 +2918,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "wrappy": "1.0.2"
+            "wrappy": "1"
           }
         },
         "optimist": {
@@ -2907,8 +2926,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "minimist": "0.0.8",
-            "wordwrap": "0.0.3"
+            "minimist": "~0.0.1",
+            "wordwrap": "~0.0.2"
           }
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         "os-homedir": {
@@ -2921,9 +2940,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "execa": "0.7.0",
-            "lcid": "1.0.0",
-            "mem": "1.1.0"
+            "execa": "^0.7.0",
+            "lcid": "^1.0.0",
+            "mem": "^1.1.0"
           }
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@@ -2936,7 +2955,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "p-try": "1.0.0"
+            "p-try": "^1.0.0"
           }
         },
         "p-locate": {
@@ -2944,7 +2963,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "p-limit": "1.2.0"
+            "p-limit": "^1.1.0"
           }
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         "p-try": {
@@ -2957,7 +2976,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "error-ex": "1.3.1"
+            "error-ex": "^1.2.0"
           }
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@@ -2970,7 +2989,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "pinkie-promise": "2.0.1"
+            "pinkie-promise": "^2.0.0"
           }
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         "path-is-absolute": {
@@ -2993,9 +3012,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "graceful-fs": "4.1.11",
-            "pify": "2.3.0",
-            "pinkie-promise": "2.0.1"
+            "graceful-fs": "^4.1.2",
+            "pify": "^2.0.0",
+            "pinkie-promise": "^2.0.0"
           }
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         "pify": {
@@ -3013,7 +3032,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "pinkie": "2.0.4"
+            "pinkie": "^2.0.0"
           }
         },
         "pkg-dir": {
@@ -3021,7 +3040,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "find-up": "1.1.2"
+            "find-up": "^1.0.0"
           },
           "dependencies": {
             "find-up": {
@@ -3029,8 +3048,8 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "path-exists": "2.1.0",
-                "pinkie-promise": "2.0.1"
+                "path-exists": "^2.0.0",
+                "pinkie-promise": "^2.0.0"
               }
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           }
@@ -3050,9 +3069,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "load-json-file": "1.1.0",
-            "normalize-package-data": "2.4.0",
-            "path-type": "1.1.0"
+            "load-json-file": "^1.0.0",
+            "normalize-package-data": "^2.3.2",
+            "path-type": "^1.0.0"
           }
         },
         "read-pkg-up": {
@@ -3060,8 +3079,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "find-up": "1.1.2",
-            "read-pkg": "1.1.0"
+            "find-up": "^1.0.0",
+            "read-pkg": "^1.0.0"
           },
           "dependencies": {
             "find-up": {
@@ -3069,8 +3088,8 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "path-exists": "2.1.0",
-                "pinkie-promise": "2.0.1"
+                "path-exists": "^2.0.0",
+                "pinkie-promise": "^2.0.0"
               }
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@@ -3085,8 +3104,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "extend-shallow": "3.0.2",
-            "safe-regex": "1.1.0"
+            "extend-shallow": "^3.0.2",
+            "safe-regex": "^1.1.0"
           }
         },
         "repeat-element": {
@@ -3104,7 +3123,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-finite": "1.0.2"
+            "is-finite": "^1.0.0"
           }
         },
         "require-directory": {
@@ -3138,7 +3157,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "align-text": "0.1.4"
+            "align-text": "^0.1.1"
           }
         },
         "rimraf": {
@@ -3146,7 +3165,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "glob": "7.1.2"
+            "glob": "^7.0.5"
           }
         },
         "safe-regex": {
@@ -3154,7 +3173,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "ret": "0.1.15"
+            "ret": "~0.1.10"
           }
         },
         "semver": {
@@ -3172,10 +3191,10 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "extend-shallow": "2.0.1",
-            "is-extendable": "0.1.1",
-            "is-plain-object": "2.0.4",
-            "split-string": "3.1.0"
+            "extend-shallow": "^2.0.1",
+            "is-extendable": "^0.1.1",
+            "is-plain-object": "^2.0.3",
+            "split-string": "^3.0.1"
           },
           "dependencies": {
             "extend-shallow": {
@@ -3183,7 +3202,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-extendable": "0.1.1"
+                "is-extendable": "^0.1.0"
               }
             }
           }
@@ -3193,7 +3212,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "shebang-regex": "1.0.0"
+            "shebang-regex": "^1.0.0"
           }
         },
         "shebang-regex": {
@@ -3216,14 +3235,14 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "base": "0.11.2",
-            "debug": "2.6.9",
-            "define-property": "0.2.5",
-            "extend-shallow": "2.0.1",
-            "map-cache": "0.2.2",
-            "source-map": "0.5.7",
-            "source-map-resolve": "0.5.1",
-            "use": "3.1.0"
+            "base": "^0.11.1",
+            "debug": "^2.2.0",
+            "define-property": "^0.2.5",
+            "extend-shallow": "^2.0.1",
+            "map-cache": "^0.2.2",
+            "source-map": "^0.5.6",
+            "source-map-resolve": "^0.5.0",
+            "use": "^3.1.0"
           },
           "dependencies": {
             "define-property": {
@@ -3231,7 +3250,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-descriptor": "0.1.6"
+                "is-descriptor": "^0.1.0"
               }
             },
             "extend-shallow": {
@@ -3239,7 +3258,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-extendable": "0.1.1"
+                "is-extendable": "^0.1.0"
               }
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           }
@@ -3249,9 +3268,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "define-property": "1.0.0",
-            "isobject": "3.0.1",
-            "snapdragon-util": "3.0.1"
+            "define-property": "^1.0.0",
+            "isobject": "^3.0.0",
+            "snapdragon-util": "^3.0.1"
           },
           "dependencies": {
             "define-property": {
@@ -3259,7 +3278,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-descriptor": "1.0.2"
+                "is-descriptor": "^1.0.0"
               }
             },
             "is-accessor-descriptor": {
@@ -3267,7 +3286,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
             },
             "is-data-descriptor": {
@@ -3275,7 +3294,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
             },
             "is-descriptor": {
@@ -3283,9 +3302,9 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-accessor-descriptor": "1.0.0",
-                "is-data-descriptor": "1.0.0",
-                "kind-of": "6.0.2"
+                "is-accessor-descriptor": "^1.0.0",
+                "is-data-descriptor": "^1.0.0",
+                "kind-of": "^6.0.2"
               }
             },
             "isobject": {
@@ -3305,7 +3324,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "kind-of": "3.2.2"
+            "kind-of": "^3.2.0"
           }
         },
         "source-map": {
@@ -3318,11 +3337,11 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "atob": "2.1.1",
-            "decode-uri-component": "0.2.0",
-            "resolve-url": "0.2.1",
-            "source-map-url": "0.4.0",
-            "urix": "0.1.0"
+            "atob": "^2.0.0",
+            "decode-uri-component": "^0.2.0",
+            "resolve-url": "^0.2.1",
+            "source-map-url": "^0.4.0",
+            "urix": "^0.1.0"
           }
         },
         "source-map-url": {
@@ -3335,12 +3354,12 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "foreground-child": "1.5.6",
-            "mkdirp": "0.5.1",
-            "os-homedir": "1.0.2",
-            "rimraf": "2.6.2",
-            "signal-exit": "3.0.2",
-            "which": "1.3.0"
+            "foreground-child": "^1.5.6",
+            "mkdirp": "^0.5.0",
+            "os-homedir": "^1.0.1",
+            "rimraf": "^2.6.2",
+            "signal-exit": "^3.0.2",
+            "which": "^1.3.0"
           }
         },
         "spdx-correct": {
@@ -3348,8 +3367,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "spdx-expression-parse": "3.0.0",
-            "spdx-license-ids": "3.0.0"
+            "spdx-expression-parse": "^3.0.0",
+            "spdx-license-ids": "^3.0.0"
           }
         },
         "spdx-exceptions": {
@@ -3362,8 +3381,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "spdx-exceptions": "2.1.0",
-            "spdx-license-ids": "3.0.0"
+            "spdx-exceptions": "^2.1.0",
+            "spdx-license-ids": "^3.0.0"
           }
         },
         "spdx-license-ids": {
@@ -3376,7 +3395,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "extend-shallow": "3.0.2"
+            "extend-shallow": "^3.0.0"
           }
         },
         "static-extend": {
@@ -3384,8 +3403,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "define-property": "0.2.5",
-            "object-copy": "0.1.0"
+            "define-property": "^0.2.5",
+            "object-copy": "^0.1.0"
           },
           "dependencies": {
             "define-property": {
@@ -3393,7 +3412,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-descriptor": "0.1.6"
+                "is-descriptor": "^0.1.0"
               }
             }
           }
@@ -3403,8 +3422,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-fullwidth-code-point": "2.0.0",
-            "strip-ansi": "4.0.0"
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
           },
           "dependencies": {
             "ansi-regex": {
@@ -3417,7 +3436,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "ansi-regex": "3.0.0"
+                "ansi-regex": "^3.0.0"
               }
             }
           }
@@ -3427,7 +3446,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
           }
         },
         "strip-bom": {
@@ -3435,7 +3454,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-utf8": "0.2.1"
+            "is-utf8": "^0.2.0"
           }
         },
         "strip-eof": {
@@ -3453,11 +3472,11 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "arrify": "1.0.1",
-            "micromatch": "3.1.10",
-            "object-assign": "4.1.1",
-            "read-pkg-up": "1.0.1",
-            "require-main-filename": "1.0.1"
+            "arrify": "^1.0.1",
+            "micromatch": "^3.1.8",
+            "object-assign": "^4.1.0",
+            "read-pkg-up": "^1.0.1",
+            "require-main-filename": "^1.0.1"
           },
           "dependencies": {
             "arr-diff": {
@@ -3475,16 +3494,16 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "arr-flatten": "1.1.0",
-                "array-unique": "0.3.2",
-                "extend-shallow": "2.0.1",
-                "fill-range": "4.0.0",
-                "isobject": "3.0.1",
-                "repeat-element": "1.1.2",
-                "snapdragon": "0.8.2",
-                "snapdragon-node": "2.1.1",
-                "split-string": "3.1.0",
-                "to-regex": "3.0.2"
+                "arr-flatten": "^1.1.0",
+                "array-unique": "^0.3.2",
+                "extend-shallow": "^2.0.1",
+                "fill-range": "^4.0.0",
+                "isobject": "^3.0.1",
+                "repeat-element": "^1.1.2",
+                "snapdragon": "^0.8.1",
+                "snapdragon-node": "^2.0.1",
+                "split-string": "^3.0.2",
+                "to-regex": "^3.0.1"
               },
               "dependencies": {
                 "extend-shallow": {
@@ -3492,7 +3511,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "is-extendable": "0.1.1"
+                    "is-extendable": "^0.1.0"
                   }
                 }
               }
@@ -3502,13 +3521,13 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "debug": "2.6.9",
-                "define-property": "0.2.5",
-                "extend-shallow": "2.0.1",
-                "posix-character-classes": "0.1.1",
-                "regex-not": "1.0.2",
-                "snapdragon": "0.8.2",
-                "to-regex": "3.0.2"
+                "debug": "^2.3.3",
+                "define-property": "^0.2.5",
+                "extend-shallow": "^2.0.1",
+                "posix-character-classes": "^0.1.0",
+                "regex-not": "^1.0.0",
+                "snapdragon": "^0.8.1",
+                "to-regex": "^3.0.1"
               },
               "dependencies": {
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@@ -3516,7 +3535,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "is-descriptor": "0.1.6"
+                    "is-descriptor": "^0.1.0"
                   }
                 },
                 "extend-shallow": {
@@ -3524,7 +3543,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "is-extendable": "0.1.1"
+                    "is-extendable": "^0.1.0"
                   }
                 },
                 "is-accessor-descriptor": {
@@ -3532,7 +3551,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "kind-of": "3.2.2"
+                    "kind-of": "^3.0.2"
                   },
                   "dependencies": {
                     "kind-of": {
@@ -3540,7 +3559,7 @@
                       "bundled": true,
                       "dev": true,
                       "requires": {
-                        "is-buffer": "1.1.6"
+                        "is-buffer": "^1.1.5"
                       }
                     }
                   }
@@ -3550,7 +3569,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "kind-of": "3.2.2"
+                    "kind-of": "^3.0.2"
                   },
                   "dependencies": {
                     "kind-of": {
@@ -3558,7 +3577,7 @@
                       "bundled": true,
                       "dev": true,
                       "requires": {
-                        "is-buffer": "1.1.6"
+                        "is-buffer": "^1.1.5"
                       }
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@@ -3568,9 +3587,9 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "is-accessor-descriptor": "0.1.6",
-                    "is-data-descriptor": "0.1.4",
-                    "kind-of": "5.1.0"
+                    "is-accessor-descriptor": "^0.1.6",
+                    "is-data-descriptor": "^0.1.4",
+                    "kind-of": "^5.0.0"
                   }
                 },
                 "kind-of": {
@@ -3585,14 +3604,14 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "array-unique": "0.3.2",
-                "define-property": "1.0.0",
-                "expand-brackets": "2.1.4",
-                "extend-shallow": "2.0.1",
-                "fragment-cache": "0.2.1",
-                "regex-not": "1.0.2",
-                "snapdragon": "0.8.2",
-                "to-regex": "3.0.2"
+                "array-unique": "^0.3.2",
+                "define-property": "^1.0.0",
+                "expand-brackets": "^2.1.4",
+                "extend-shallow": "^2.0.1",
+                "fragment-cache": "^0.2.1",
+                "regex-not": "^1.0.0",
+                "snapdragon": "^0.8.1",
+                "to-regex": "^3.0.1"
               },
               "dependencies": {
                 "define-property": {
@@ -3600,7 +3619,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "is-descriptor": "1.0.2"
+                    "is-descriptor": "^1.0.0"
                   }
                 },
                 "extend-shallow": {
@@ -3608,7 +3627,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "is-extendable": "0.1.1"
+                    "is-extendable": "^0.1.0"
                   }
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@@ -3618,10 +3637,10 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "extend-shallow": "2.0.1",
-                "is-number": "3.0.0",
-                "repeat-string": "1.6.1",
-                "to-regex-range": "2.1.1"
+                "extend-shallow": "^2.0.1",
+                "is-number": "^3.0.0",
+                "repeat-string": "^1.6.1",
+                "to-regex-range": "^2.1.0"
               },
               "dependencies": {
                 "extend-shallow": {
@@ -3629,7 +3648,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "is-extendable": "0.1.1"
+                    "is-extendable": "^0.1.0"
                   }
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@@ -3639,7 +3658,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
             },
             "is-data-descriptor": {
@@ -3647,7 +3666,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "6.0.2"
+                "kind-of": "^6.0.0"
               }
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             "is-descriptor": {
@@ -3655,9 +3674,9 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-accessor-descriptor": "1.0.0",
-                "is-data-descriptor": "1.0.0",
-                "kind-of": "6.0.2"
+                "is-accessor-descriptor": "^1.0.0",
+                "is-data-descriptor": "^1.0.0",
+                "kind-of": "^6.0.2"
               }
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             "is-number": {
@@ -3665,7 +3684,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "3.2.2"
+                "kind-of": "^3.0.2"
               },
               "dependencies": {
                 "kind-of": {
@@ -3673,7 +3692,7 @@
                   "bundled": true,
                   "dev": true,
                   "requires": {
-                    "is-buffer": "1.1.6"
+                    "is-buffer": "^1.1.5"
                   }
                 }
               }
@@ -3693,19 +3712,19 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "arr-diff": "4.0.0",
-                "array-unique": "0.3.2",
-                "braces": "2.3.2",
-                "define-property": "2.0.2",
-                "extend-shallow": "3.0.2",
-                "extglob": "2.0.4",
-                "fragment-cache": "0.2.1",
-                "kind-of": "6.0.2",
-                "nanomatch": "1.2.9",
-                "object.pick": "1.3.0",
-                "regex-not": "1.0.2",
-                "snapdragon": "0.8.2",
-                "to-regex": "3.0.2"
+                "arr-diff": "^4.0.0",
+                "array-unique": "^0.3.2",
+                "braces": "^2.3.1",
+                "define-property": "^2.0.2",
+                "extend-shallow": "^3.0.2",
+                "extglob": "^2.0.4",
+                "fragment-cache": "^0.2.1",
+                "kind-of": "^6.0.2",
+                "nanomatch": "^1.2.9",
+                "object.pick": "^1.3.0",
+                "regex-not": "^1.0.0",
+                "snapdragon": "^0.8.1",
+                "to-regex": "^3.0.2"
               }
             }
           }
@@ -3720,7 +3739,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "kind-of": "3.2.2"
+            "kind-of": "^3.0.2"
           }
         },
         "to-regex": {
@@ -3728,10 +3747,10 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "define-property": "2.0.2",
-            "extend-shallow": "3.0.2",
-            "regex-not": "1.0.2",
-            "safe-regex": "1.1.0"
+            "define-property": "^2.0.2",
+            "extend-shallow": "^3.0.2",
+            "regex-not": "^1.0.2",
+            "safe-regex": "^1.1.0"
           }
         },
         "to-regex-range": {
@@ -3739,8 +3758,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "is-number": "3.0.0",
-            "repeat-string": "1.6.1"
+            "is-number": "^3.0.0",
+            "repeat-string": "^1.6.1"
           },
           "dependencies": {
             "is-number": {
@@ -3748,7 +3767,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "kind-of": "3.2.2"
+                "kind-of": "^3.0.2"
               }
             }
           }
@@ -3764,9 +3783,9 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "source-map": "0.5.7",
-            "uglify-to-browserify": "1.0.2",
-            "yargs": "3.10.0"
+            "source-map": "~0.5.1",
+            "uglify-to-browserify": "~1.0.0",
+            "yargs": "~3.10.0"
           },
           "dependencies": {
             "yargs": {
@@ -3775,9 +3794,9 @@
               "dev": true,
               "optional": true,
               "requires": {
-                "camelcase": "1.2.1",
-                "cliui": "2.1.0",
-                "decamelize": "1.2.0",
+                "camelcase": "^1.0.2",
+                "cliui": "^2.1.0",
+                "decamelize": "^1.0.0",
                 "window-size": "0.1.0"
               }
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@@ -3794,10 +3813,10 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "arr-union": "3.1.0",
-            "get-value": "2.0.6",
-            "is-extendable": "0.1.1",
-            "set-value": "0.4.3"
+            "arr-union": "^3.1.0",
+            "get-value": "^2.0.6",
+            "is-extendable": "^0.1.1",
+            "set-value": "^0.4.3"
           },
           "dependencies": {
             "extend-shallow": {
@@ -3805,7 +3824,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "is-extendable": "0.1.1"
+                "is-extendable": "^0.1.0"
               }
             },
             "set-value": {
@@ -3813,10 +3832,10 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "extend-shallow": "2.0.1",
-                "is-extendable": "0.1.1",
-                "is-plain-object": "2.0.4",
-                "to-object-path": "0.3.0"
+                "extend-shallow": "^2.0.1",
+                "is-extendable": "^0.1.1",
+                "is-plain-object": "^2.0.1",
+                "to-object-path": "^0.3.0"
               }
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@@ -3826,8 +3845,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "has-value": "0.3.1",
-            "isobject": "3.0.1"
+            "has-value": "^0.3.1",
+            "isobject": "^3.0.0"
           },
           "dependencies": {
             "has-value": {
@@ -3835,9 +3854,9 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "get-value": "2.0.6",
-                "has-values": "0.1.4",
-                "isobject": "2.1.0"
+                "get-value": "^2.0.3",
+                "has-values": "^0.1.4",
+                "isobject": "^2.0.0"
               },
               "dependencies": {
                 "isobject": {
@@ -3872,7 +3891,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "kind-of": "6.0.2"
+            "kind-of": "^6.0.2"
           },
           "dependencies": {
             "kind-of": {
@@ -3887,8 +3906,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "spdx-correct": "3.0.0",
-            "spdx-expression-parse": "3.0.0"
+            "spdx-correct": "^3.0.0",
+            "spdx-expression-parse": "^3.0.0"
           }
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         "which": {
@@ -3896,7 +3915,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "isexe": "2.0.0"
+            "isexe": "^2.0.0"
           }
         },
         "which-module": {
@@ -3920,8 +3939,8 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "string-width": "1.0.2",
-            "strip-ansi": "3.0.1"
+            "string-width": "^1.0.1",
+            "strip-ansi": "^3.0.1"
           },
           "dependencies": {
             "is-fullwidth-code-point": {
@@ -3929,7 +3948,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "number-is-nan": "1.0.1"
+                "number-is-nan": "^1.0.0"
               }
             },
             "string-width": {
@@ -3937,9 +3956,9 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "code-point-at": "1.1.0",
-                "is-fullwidth-code-point": "1.0.0",
-                "strip-ansi": "3.0.1"
+                "code-point-at": "^1.0.0",
+                "is-fullwidth-code-point": "^1.0.0",
+                "strip-ansi": "^3.0.0"
               }
             }
           }
@@ -3954,9 +3973,9 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "graceful-fs": "4.1.11",
-            "imurmurhash": "0.1.4",
-            "slide": "1.1.6"
+            "graceful-fs": "^4.1.11",
+            "imurmurhash": "^0.1.4",
+            "slide": "^1.1.5"
           }
         },
         "y18n": {
@@ -3974,18 +3993,18 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "cliui": "4.1.0",
-            "decamelize": "1.2.0",
-            "find-up": "2.1.0",
-            "get-caller-file": "1.0.2",
-            "os-locale": "2.1.0",
-            "require-directory": "2.1.1",
-            "require-main-filename": "1.0.1",
-            "set-blocking": "2.0.0",
-            "string-width": "2.1.1",
-            "which-module": "2.0.0",
-            "y18n": "3.2.1",
-            "yargs-parser": "9.0.2"
+            "cliui": "^4.0.0",
+            "decamelize": "^1.1.1",
+            "find-up": "^2.1.0",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^2.0.0",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1",
+            "yargs-parser": "^9.0.2"
           },
           "dependencies": {
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@@ -4003,9 +4022,9 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "string-width": "2.1.1",
-                "strip-ansi": "4.0.0",
-                "wrap-ansi": "2.1.0"
+                "string-width": "^2.1.1",
+                "strip-ansi": "^4.0.0",
+                "wrap-ansi": "^2.0.0"
               }
             },
             "strip-ansi": {
@@ -4013,7 +4032,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "ansi-regex": "3.0.0"
+                "ansi-regex": "^3.0.0"
               }
             },
             "yargs-parser": {
@@ -4021,7 +4040,7 @@
               "bundled": true,
               "dev": true,
               "requires": {
-                "camelcase": "4.1.0"
+                "camelcase": "^4.1.0"
               }
             }
           }
@@ -4031,7 +4050,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "camelcase": "4.1.0"
+            "camelcase": "^4.1.0"
           },
           "dependencies": {
             "camelcase": {
@@ -4050,9 +4069,9 @@
       "dev": true
     },
     "object-inspect": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.0.2.tgz",
-      "integrity": "sha1-qXiFtVPldetACevAm92psc0hl5o=",
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.6.0.tgz",
+      "integrity": "sha512-GJzfBZ6DgDAmnuaM3104jR4s1Myxr3Y3zfIyN4z3UdqN69oSRacNK8UhnobDdC+7J2AHCjGwxQubNJfE70SXXQ==",
       "dev": true
     },
     "once": {
@@ -4061,7 +4080,7 @@
       "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
       "dev": true,
       "requires": {
-        "wrappy": "1.0.2"
+        "wrappy": "1"
       }
     },
     "onetime": {
@@ -4070,7 +4089,7 @@
       "integrity": "sha1-BnQoIw/WdEOyeUsiu6UotoZ5YtQ=",
       "dev": true,
       "requires": {
-        "mimic-fn": "1.2.0"
+        "mimic-fn": "^1.0.0"
       }
     },
     "optionator": {
@@ -4079,12 +4098,12 @@
       "integrity": "sha1-NkxeQJ0/TWMB1sC0wFu6UBgK62Q=",
       "dev": true,
       "requires": {
-        "deep-is": "0.1.3",
-        "fast-levenshtein": "2.0.6",
-        "levn": "0.3.0",
-        "prelude-ls": "1.1.2",
-        "type-check": "0.3.2",
-        "wordwrap": "1.0.0"
+        "deep-is": "~0.1.3",
+        "fast-levenshtein": "~2.0.4",
+        "levn": "~0.3.0",
+        "prelude-ls": "~1.1.2",
+        "type-check": "~0.3.2",
+        "wordwrap": "~1.0.0"
       }
     },
     "os-locale": {
@@ -4093,9 +4112,9 @@
       "integrity": "sha512-3sslG3zJbEYcaC4YVAvDorjGxc7tv6KVATnLPZONiljsUncvihe9BQoVCEs0RZ1kmf4Hk9OBqlZfJZWI4GanKA==",
       "dev": true,
       "requires": {
-        "execa": "0.7.0",
-        "lcid": "1.0.0",
-        "mem": "1.1.0"
+        "execa": "^0.7.0",
+        "lcid": "^1.0.0",
+        "mem": "^1.1.0"
       }
     },
     "os-tmpdir": {
@@ -4116,7 +4135,7 @@
       "integrity": "sha512-Y/OtIaXtUPr4/YpMv1pCL5L5ed0rumAaAeBSj12F+bSlMdys7i8oQF/GUJmfpTS/QoaRrS/k6pma29haJpsMng==",
       "dev": true,
       "requires": {
-        "p-try": "1.0.0"
+        "p-try": "^1.0.0"
       }
     },
     "p-locate": {
@@ -4125,7 +4144,7 @@
       "integrity": "sha1-IKAQOyIqcMj9OcwuWAaA893l7EM=",
       "dev": true,
       "requires": {
-        "p-limit": "1.2.0"
+        "p-limit": "^1.1.0"
       }
     },
     "p-try": {
@@ -4140,7 +4159,7 @@
       "integrity": "sha1-9ID0BDTvgHQfhGkJn43qGPVaTck=",
       "dev": true,
       "requires": {
-        "error-ex": "1.3.1"
+        "error-ex": "^1.2.0"
       }
     },
     "path-exists": {
@@ -4173,15 +4192,9 @@
       "integrity": "sha1-8BLMuEFbcJb8LaoQVMPXI4lZTHM=",
       "dev": true,
       "requires": {
-        "pify": "2.3.0"
+        "pify": "^2.0.0"
       }
     },
-    "pathval": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-0.1.1.tgz",
-      "integrity": "sha1-CPkRzcqczllCiA2ngXvAtyO2bYI=",
-      "dev": true
-    },
     "pify": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
@@ -4200,7 +4213,7 @@
       "integrity": "sha1-ITXW36ejWMBprJsXh3YogihFD/o=",
       "dev": true,
       "requires": {
-        "pinkie": "2.0.4"
+        "pinkie": "^2.0.0"
       }
     },
     "pluralize": {
@@ -4227,12 +4240,22 @@
       "integrity": "sha1-ihvjZr+Pwj2yvSPxDG/pILQ4nR8=",
       "dev": true
     },
-    "pruddy-error": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/pruddy-error/-/pruddy-error-1.0.2.tgz",
-      "integrity": "sha1-s37Bo4v5EHwM3FvGY9PU6ANUroA=",
+    "propget": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/propget/-/propget-1.1.0.tgz",
+      "integrity": "sha1-bBx6yaCcBb21yWfwzY4cCUCf72s=",
       "dev": true
     },
+    "pruddy-error": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/pruddy-error/-/pruddy-error-2.0.2.tgz",
+      "integrity": "sha512-cEMUxXtU7iD+he5Hh1Jr3RHdTvAID2/VHBpC2TDLWP7UmbvZmR4/B50mQK7lguZhqcBTwdtsN9JI8diVTWedNw==",
+      "dev": true,
+      "requires": {
+        "is-node": "^1.0.2",
+        "left-pad": "^1.2.0"
+      }
+    },
     "pseudomap": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/pseudomap/-/pseudomap-1.0.2.tgz",
@@ -4251,9 +4274,9 @@
       "integrity": "sha1-jvHAYjxqbbDcZxPEv6xGMysjaPg=",
       "dev": true,
       "requires": {
-        "load-json-file": "2.0.0",
-        "normalize-package-data": "2.4.0",
-        "path-type": "2.0.0"
+        "load-json-file": "^2.0.0",
+        "normalize-package-data": "^2.3.2",
+        "path-type": "^2.0.0"
       }
     },
     "read-pkg-up": {
@@ -4262,8 +4285,8 @@
       "integrity": "sha1-a3KoBImE4MQeeVEP1en6mbO1Sb4=",
       "dev": true,
       "requires": {
-        "find-up": "2.1.0",
-        "read-pkg": "2.0.0"
+        "find-up": "^2.0.0",
+        "read-pkg": "^2.0.0"
       }
     },
     "readable-stream": {
@@ -4272,13 +4295,13 @@
       "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
       "dev": true,
       "requires": {
-        "core-util-is": "1.0.2",
-        "inherits": "2.0.3",
-        "isarray": "1.0.0",
-        "process-nextick-args": "2.0.0",
-        "safe-buffer": "5.1.2",
-        "string_decoder": "1.1.1",
-        "util-deprecate": "1.0.2"
+        "core-util-is": "~1.0.0",
+        "inherits": "~2.0.3",
+        "isarray": "~1.0.0",
+        "process-nextick-args": "~2.0.0",
+        "safe-buffer": "~5.1.1",
+        "string_decoder": "~1.1.1",
+        "util-deprecate": "~1.0.1"
       }
     },
     "regexpp": {
@@ -4305,8 +4328,8 @@
       "integrity": "sha1-Tg1W1slmL9MeQwEcS5WqSZVUIdM=",
       "dev": true,
       "requires": {
-        "caller-path": "0.1.0",
-        "resolve-from": "1.0.1"
+        "caller-path": "^0.1.0",
+        "resolve-from": "^1.0.0"
       }
     },
     "resolve-from": {
@@ -4321,8 +4344,8 @@
       "integrity": "sha1-n37ih/gv0ybU/RYpI9YhKe7g368=",
       "dev": true,
       "requires": {
-        "onetime": "2.0.1",
-        "signal-exit": "3.0.2"
+        "onetime": "^2.0.0",
+        "signal-exit": "^3.0.2"
       }
     },
     "rimraf": {
@@ -4331,7 +4354,7 @@
       "integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
       "dev": true,
       "requires": {
-        "glob": "7.1.2"
+        "glob": "^7.0.5"
       }
     },
     "run-async": {
@@ -4340,7 +4363,7 @@
       "integrity": "sha1-A3GrSuC91yDUFm19/aZP96RFpsA=",
       "dev": true,
       "requires": {
-        "is-promise": "2.1.0"
+        "is-promise": "^2.1.0"
       }
     },
     "rx-lite": {
@@ -4355,7 +4378,7 @@
       "integrity": "sha1-dTuHqJoRyVRnxKwWJsTvxOBcZ74=",
       "dev": true,
       "requires": {
-        "rx-lite": "4.0.8"
+        "rx-lite": "*"
       }
     },
     "safe-buffer": {
@@ -4388,7 +4411,7 @@
       "integrity": "sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=",
       "dev": true,
       "requires": {
-        "shebang-regex": "1.0.0"
+        "shebang-regex": "^1.0.0"
       }
     },
     "shebang-regex": {
@@ -4415,7 +4438,7 @@
       "integrity": "sha512-POqxBK6Lb3q6s047D/XsDVNPnF9Dl8JSaqe9h9lURl0OdNqy/ujDrOiIHtsqXMGbWWTIomRzAMaTyawAU//Reg==",
       "dev": true,
       "requires": {
-        "is-fullwidth-code-point": "2.0.0"
+        "is-fullwidth-code-point": "^2.0.0"
       }
     },
     "spdx-correct": {
@@ -4424,8 +4447,8 @@
       "integrity": "sha512-N19o9z5cEyc8yQQPukRCZ9EUmb4HUpnrmaL/fxS2pBo2jbfcFRVuFZ/oFC+vZz0MNNk0h80iMn5/S6qGZOL5+g==",
       "dev": true,
       "requires": {
-        "spdx-expression-parse": "3.0.0",
-        "spdx-license-ids": "3.0.0"
+        "spdx-expression-parse": "^3.0.0",
+        "spdx-license-ids": "^3.0.0"
       }
     },
     "spdx-exceptions": {
@@ -4440,8 +4463,8 @@
       "integrity": "sha512-Yg6D3XpRD4kkOmTpdgbUiEJFKghJH03fiC1OPll5h/0sO6neh2jqRDVHOQ4o/LMea0tgCkbMgea5ip/e+MkWyg==",
       "dev": true,
       "requires": {
-        "spdx-exceptions": "2.1.0",
-        "spdx-license-ids": "3.0.0"
+        "spdx-exceptions": "^2.1.0",
+        "spdx-license-ids": "^3.0.0"
       }
     },
     "spdx-license-ids": {
@@ -4462,8 +4485,8 @@
       "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
       "dev": true,
       "requires": {
-        "is-fullwidth-code-point": "2.0.0",
-        "strip-ansi": "4.0.0"
+        "is-fullwidth-code-point": "^2.0.0",
+        "strip-ansi": "^4.0.0"
       }
     },
     "string_decoder": {
@@ -4472,7 +4495,7 @@
       "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
       "dev": true,
       "requires": {
-        "safe-buffer": "5.1.2"
+        "safe-buffer": "~5.1.0"
       }
     },
     "strip-ansi": {
@@ -4481,7 +4504,7 @@
       "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
       "dev": true,
       "requires": {
-        "ansi-regex": "3.0.0"
+        "ansi-regex": "^3.0.0"
       },
       "dependencies": {
         "ansi-regex": {
@@ -4522,12 +4545,12 @@
       "integrity": "sha512-UUkEAPdSGxtRpiV9ozJ5cMTtYiqz7Ni1OGqLXRCynrvzdtR1p+cfOWe2RJLwvUG8hNanaSRjecIqwOjqeatDsA==",
       "dev": true,
       "requires": {
-        "ajv": "5.5.2",
-        "ajv-keywords": "2.1.1",
-        "chalk": "2.4.1",
-        "lodash": "4.17.10",
+        "ajv": "^5.2.3",
+        "ajv-keywords": "^2.1.0",
+        "chalk": "^2.1.0",
+        "lodash": "^4.17.4",
         "slice-ansi": "1.0.0",
-        "string-width": "2.1.1"
+        "string-width": "^2.1.1"
       }
     },
     "text-hex": {
@@ -4554,7 +4577,7 @@
       "integrity": "sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==",
       "dev": true,
       "requires": {
-        "os-tmpdir": "1.0.2"
+        "os-tmpdir": "~1.0.2"
       }
     },
     "triple-beam": {
@@ -4568,13 +4591,13 @@
       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
       "dev": true,
       "requires": {
-        "prelude-ls": "1.1.2"
+        "prelude-ls": "~1.1.2"
       }
     },
     "type-detect": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-0.1.1.tgz",
-      "integrity": "sha1-C6XsKohWQORw6k6FBZcZANrFiCI=",
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
+      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
       "dev": true
     },
     "typedarray": {
@@ -4595,8 +4618,8 @@
       "integrity": "sha512-63ZOUnL4SIXj4L0NixR3L1lcjO38crAbgrTpl28t8jjrfuiOBL5Iygm+60qPs/KsZGzPNg6Smnc/oY16QTjF0g==",
       "dev": true,
       "requires": {
-        "spdx-correct": "3.0.0",
-        "spdx-expression-parse": "3.0.0"
+        "spdx-correct": "^3.0.0",
+        "spdx-expression-parse": "^3.0.0"
       }
     },
     "vows": {
@@ -4605,9 +4628,9 @@
       "integrity": "sha1-aR95qybM3oC6cm3en+yOc9a88us=",
       "dev": true,
       "requires": {
-        "diff": "1.0.8",
-        "eyes": "0.1.8",
-        "glob": "7.1.2"
+        "diff": "~1.0.8",
+        "eyes": "~0.1.6",
+        "glob": "^7.1.2"
       },
       "dependencies": {
         "diff": {
@@ -4619,12 +4642,12 @@
       }
     },
     "which": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
-      "integrity": "sha512-xcJpopdamTuY5duC/KnTTNBraPK54YwpenP4lzxU8H91GudWpFv38u0CKjclE1Wi2EH2EDz5LRcHcKbCIzqGyg==",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
       "dev": true,
       "requires": {
-        "isexe": "2.0.0"
+        "isexe": "^2.0.0"
       }
     },
     "which-module": {
@@ -4645,8 +4668,8 @@
       "integrity": "sha512-EO4TiFrWGizbzSx0rF3jIeU4Lo2MlrtpnxOR8bKjckmlWdqDifl55nqDOqkFAFPsHRTvleD49hrBfZCWSnxwMw==",
       "dev": true,
       "requires": {
-        "cycle": "1.0.3",
-        "vows": "0.8.2"
+        "cycle": "~1.0.3",
+        "vows": "^0.8.1"
       }
     },
     "wordwrap": {
@@ -4661,8 +4684,8 @@
       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
       "dev": true,
       "requires": {
-        "string-width": "1.0.2",
-        "strip-ansi": "3.0.1"
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
       },
       "dependencies": {
         "is-fullwidth-code-point": {
@@ -4671,7 +4694,7 @@
           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
           "requires": {
-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
           }
         },
         "string-width": {
@@ -4680,9 +4703,9 @@
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
           "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
           }
         },
         "strip-ansi": {
@@ -4691,7 +4714,7 @@
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
           }
         }
       }
@@ -4708,7 +4731,7 @@
       "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
       "dev": true,
       "requires": {
-        "mkdirp": "0.5.1"
+        "mkdirp": "^0.5.1"
       }
     },
     "y18n": {
@@ -4729,19 +4752,19 @@
       "integrity": "sha1-YpmpBVsc78lp/355wdkY3Osiw2A=",
       "dev": true,
       "requires": {
-        "camelcase": "4.1.0",
-        "cliui": "3.2.0",
-        "decamelize": "1.2.0",
-        "get-caller-file": "1.0.2",
-        "os-locale": "2.1.0",
-        "read-pkg-up": "2.0.0",
-        "require-directory": "2.1.1",
-        "require-main-filename": "1.0.1",
-        "set-blocking": "2.0.0",
-        "string-width": "2.1.1",
-        "which-module": "2.0.0",
-        "y18n": "3.2.1",
-        "yargs-parser": "7.0.0"
+        "camelcase": "^4.1.0",
+        "cliui": "^3.2.0",
+        "decamelize": "^1.1.1",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^2.0.0",
+        "read-pkg-up": "^2.0.0",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^1.0.1",
+        "set-blocking": "^2.0.0",
+        "string-width": "^2.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^3.2.1",
+        "yargs-parser": "^7.0.0"
       }
     },
     "yargs-parser": {
@@ -4750,7 +4773,7 @@
       "integrity": "sha1-jQrELxbqVd69MyyvTEA4s+P139k=",
       "dev": true,
       "requires": {
-        "camelcase": "4.1.0"
+        "camelcase": "^4.1.0"
       }
     }
   }
diff --git a/package.json b/package.json
index 0c350ab..b03458c 100644
--- a/package.json
+++ b/package.json
@@ -28,9 +28,9 @@
     "triple-beam": "^1.2.0"
   },
   "devDependencies": {
-    "@types/node": "^9.6.1",
+    "@types/node": "^10.1.4",
     "abstract-winston-transport": ">= 0.3.0",
-    "assume": "^1.4.1",
+    "assume": "^2.0.1",
     "eslint-config-populist": "^4.1.0",
     "logform": "^1.4.0",
     "mocha": "^5.0.5",
diff --git a/test/fixtures/legacy-transport.js b/test/fixtures/legacy-transport.js
index 7b82d64..ef04d99 100644
--- a/test/fixtures/legacy-transport.js
+++ b/test/fixtures/legacy-transport.js
@@ -9,7 +9,7 @@ module.exports = class LegacyTransport extends Transport {
    * Constructor function for the LegacyTransport which we use for testing
    * purposes. It breaks all the established rules and conventions for testing
    * edge cases. You SHOULD NOT use this as an example for how to write a
-  * custom `winston` Transport.
+   * custom `winston` Transport.
    * @param {Object} opts - Configuration for this instance
    */
   constructor(opts = {}) {
@@ -22,9 +22,7 @@ module.exports = class LegacyTransport extends Transport {
     // `winston` these levels will always inherit from the Logger we are piped
     // to.
     this.levels = opts.levels;
-    this.stream = opts.stream || {
-      write() {}
-    };
+    this.stream = opts.stream || { write() {} };
     this.streams = opts.streams;
   }
 
diff --git a/test/fixtures/simple-transport.js b/test/fixtures/simple-class-transport.js
similarity index 93%
rename from test/fixtures/simple-transport.js
rename to test/fixtures/simple-class-transport.js
index f70cddb..d84e332 100644
--- a/test/fixtures/simple-transport.js
+++ b/test/fixtures/simple-class-transport.js
@@ -2,7 +2,7 @@
 
 const TransportStream = require('../../');
 
-module.epxorts = class SimpleTransport extends TransportStream {
+module.exports = class SimpleTransport extends TransportStream {
   /**
    * !!! HERE BE DRAGONS !!!
    *
@@ -12,7 +12,7 @@ module.epxorts = class SimpleTransport extends TransportStream {
    * custom `winston` Transport.
    * @param {Object} opts = Configuration for this instance
    */
-  constructor(opts) {
+  constructor(opts = {}) {
     super(opts);
 
     //
diff --git a/test/fixtures/simple-proto-transport.js b/test/fixtures/simple-proto-transport.js
new file mode 100644
index 0000000..7c83dea
--- /dev/null
+++ b/test/fixtures/simple-proto-transport.js
@@ -0,0 +1,52 @@
+'use strict';
+
+const util = require('util');
+const TransportStream = require('../../');
+
+/**
+ * !!! HERE BE DRAGONS !!!
+ *
+ * Constructor function for the SimpleTransport which we use for testing
+ * purposes. It breaks all the established rules and conventions for testing
+ * edge cases. You SHOULD NOT use this as an example for how to write a
+ * custom `winston` Transport.
+ * @param {Object} opts = Configuration for this instance
+ */
+const SimpleTransport = module.exports = function SimpleTransport(opts = {}) {
+  TransportStream.call(this, opts);
+
+  //
+  // Remark: we literally accept levels for TESTING PURPOSES only.
+  // In `winston` these levels will always inherit from the Logger
+  // we are piped to.
+  //
+  this.levels = opts.levels;
+  this.stream = opts.stream;
+  this.streams = opts.streams;
+};
+
+/*
+ * Inherit from Writeable using Node.js built-ins
+ */
+util.inherits(SimpleTransport, TransportStream);
+
+/**
+ * Writes to one of the streams associated with this instance.
+ * @param {Info} info - Winston log information.
+ * @param {Function} callback - Continuation to respond to when complete.
+ * @returns {undefined}
+ */
+SimpleTransport.prototype.log = function log(info, callback) {
+  const stream = (this.streams && this.streams[info.level]) || this.stream;
+  stream.write(JSON.stringify(info));
+  this.emit('logged');
+  callback();
+}
+
+/**
+ * Emits a custom close event for the purposes of testing
+ * @returns {undefined}
+ */
+SimpleTransport.prototype.close = function close() {
+  setImmediate(() => this.emit('closed:custom'));
+};
diff --git a/test/inheritance.test.js b/test/inheritance.test.js
new file mode 100644
index 0000000..fdd73de
--- /dev/null
+++ b/test/inheritance.test.js
@@ -0,0 +1,17 @@
+'use strict';
+
+const assume = require('assume');
+const SimpleClassTransport = require('./fixtures/simple-class-transport');
+const SimpleProtoTransport = require('./fixtures/simple-proto-transport');
+
+describe('Inheritance patterns', () => {
+  it('TransportStream (class)', function () {
+    const transport = new SimpleClassTransport();
+    assume(transport);
+  });
+
+  it('TransportStream (prototypal)', function () {
+    const transport = new SimpleProtoTransport();
+    assume(transport);
+  });
+});