chore(dependencies): update package.json packages and contributors

package.json

@@ -15,52 +15,54 @@
     "dist/"
   ],
   "devDependencies": {
-    "@babel/core": "7.x",
-    "@babel/preset-env": "7.x",
-    "@webcomponents/webcomponentsjs": "2.x",
-    "babel-loader": "8.x",
-    "browser-sync": "2.x",
+    "@babel/core": "^7.9.0",
+    "@babel/preset-env": "^7.9.0",
+    "babel-loader": "^8.1.0",
+    "browser-sync": "^2.26.7",
     "chai": "^4.2.0",
     "cheerio": "^1.0.0-rc.2",
     "clean-css": "^4.1.9",
-    "eslint": "6.x",
-    "eslint-loader": "3.x",
+    "deepmerge": "^3.2.0",
+    "eslint": "^6.8.0",
+    "eslint-loader": "^3.0.4",
     "esm": "^3.0.84",
     "express": "^4.16.3",
     "front-matter": "^2.2.0",
-    "fs-extra": "8.x",
+    "fs-extra": "^8.1.0",
     "gh-pages": "^2.0.0",
-    "globby": "10.x",
+    "globby": "^10.0.2",
     "gulp": "^4.0.2",
     "gulp-tar": "^3.1.0",
     "highlight.js": "^9.12.0",
     "jsdoc": "^3.5.5",
     "jsdom": "^12.2.0",
-    "json5": "1.x",
-    "less": "3.x",
-    "less-loader": "5.x",
+    "json5": "^2.1.3",
+    "less": "^3.11.1",
+    "less-loader": "^5.0.0",
+    "lit-html": "^1.2.1",
     "lodash": "^4.17.15",
     "mocha": "^5.2.0",
     "moment": "^2.18.1",
     "node-sass": "^4.12.0",
     "nunjucks": "^3.0.1",
     "nyc": "^13.0.1",
-    "raw-loader": "^0.5.1",
-    "rollup": "1.x",
-    "rollup-plugin-babel": "4.x",
-    "rollup-plugin-commonjs": "10.x",
-    "rollup-plugin-eslint": "7.x",
+    "raw-loader": "^4.0.0",
+    "rollup": "^1.32.1",
+    "rollup-plugin-babel": "^4.4.0",
+    "@rollup/plugin-commonjs": "^11.0.2",
+    "rollup-plugin-eslint": "^7.0.0",
     "rollup-plugin-html": "^0.2.1",
-    "rollup-plugin-json": "4.x",
-    "rollup-plugin-node-resolve": "5.x",
+    "@rollup/plugin-json": "^4.0.0",
+    "@rollup/plugin-node-resolve": "^7.1.1",
     "rollup-plugin-terser": "^5.1.2",
-    "rollup-pluginutils": "2.x",
+    "@rollup/pluginutils": "^3.0.8",
     "sinon": "^6.3.5",
     "sinon-chai": "^3.2.0",
-    "stylelint": "^11.0.0",
-    "svg-inline-loader": "^0.8.0",
-    "tar": "^4.4.4",
-    "webpack": "4.x",
+    "stylelint": "^13.3.0",
+    "svg-inline-loader": "^0.8.2",
+    "tar": "^6.0.0",
+    "@webcomponents/webcomponentsjs": "^2.4.3",
+    "webpack": "^4.42.1",
     "whatwg-fetch": "^2.0.4",
     "yargs": "^14.2.0"
   },
@@ -97,10 +99,13 @@
   "repository": "https://github.com/HelixDesignSystem/helix-ui.git",
   "author": "Ryan Johnson <rhino.citguy@gmail.com>",
   "contributors": [
+    "Andrew Raiford",
     "Andrew Yurisich",
+    "Bade Yesubabu",
     "Cathy Siller",
     "Evan Nabors",
     "James Thompson",
+    "Lalith Karikelli",
     "Shaleen Agarwal",
     "Steven Salinas",
     "Ty Taylor"

tasks/rollup/plugin-sass.js

@@ -1,5 +1,5 @@
 import sass from 'node-sass';
-import { createFilter } from 'rollup-pluginutils';
+import { createFilter } from '@rollup/pluginutils';
 
 export default function plugin (opts={}) {
     let cfg = {

tasks/rollup/plugins.js

@@ -2,8 +2,8 @@ import { eslint } from 'rollup-plugin-eslint'; // NEEDED?
 import { terser } from 'rollup-plugin-terser';
 import pBabel from 'rollup-plugin-babel';
 import pHtml from 'rollup-plugin-html';
-import pJson from 'rollup-plugin-json';
-import pResolve from 'rollup-plugin-node-resolve';
+import pJson from '@rollup/plugin-json';
+import pResolve from '@rollup/plugin-node-resolve';
 
 import pSass from './plugin-sass';