2.0.0 - 2015.12.24

• added implementations and fixes Typed Arrays-related features
  • ArrayBuffer, ArrayBuffer.isView, ArrayBuffer#slice
  • DataView with all getter / setter methods
  • Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, Float32Array and Float64Array constructors
  • %TypedArray%.{for, of}, %TypedArray%#{copyWithin, every, fill, filter, find, findIndex, forEach, indexOf, includes, join, lastIndexOf, map, reduce, reduceRight, reverse, set, slice, some, sort, subarray, values, keys, entries, @@iterator, ...}
• added System.global, proposal, November TC39 meeting
• added Error.isError, proposal, November TC39 meeting
• added Math.{iaddh, isubh, imulh, umulh}, proposal
• RegExp.escape moved from the es7 to the non-standard core namespace, July TC39 meeting - too slow, but it's condition of stability, #116
• Promise
  • some performance optimisations
  • added basic support rejectionHandled event / onrejectionhandled handler to the polyfill
  • removed usage @@species from Promise.{all, race}, November TC39 meeting
• some improvements collections polyfills
  • O(1) and preventing possible leaks with frozen keys, #134
  • correct observable state object keys
• renamed String#{padLeft, padRight} -> String#{padStart, padEnd}, proposal, November TC39 meeting (they want to rename it on each meeting?O_o), #132
• added String#{trimStart, trimEnd} as aliases for String#{trimLeft, trimRight}, proposal, November TC39 meeting
• added annex B HTML methods - ugly, but also the part of the spec
• added little fix for Date#toString - new Date(NaN).toString() should be 'Invalid Date'
• added {keys, values, entries, @@iterator} methods to DOM collections which should have iterable interface or should be inherited from Array - NodeList, DOMTokenList, MediaList, StyleSheetList, CSSRuleList.
• removed Mozilla Array generics - deprecated and will be removed from FF, looks like strawman is dead, available alternative shim
• removed core.log module
• CommonJS API
  • added entry points for virtual methods
  • added entry points for stages proposals
  • some other minor changes
• custom build from external scripts moved to the separate package for preventing problems with dependencies
• changed $ prefix for internal modules file names because Team Foundation Server does not support it, #129
• additional fix for SameValueZero in V8 ~ Chromium 39-42 collections
• additional fix for FF27 Array iterator
• removed usage shortcuts for arguments object - old WebKit bug, #150
• {Map, Set}#forEach non-generic, #144
• many other improvements

...and I hope that is not the end.