2.0.0 Beta2 - Coffeescript

releaseHeader('2017-05-16', '2.0.0-beta2', '2.0.0-beta1')

This release includes all the changes from 1.12.5 to 1.12.6.
Bound (fat arrow) methods in classes must be declared in the class constructor, after super() if the class is extending a parent class. See breaking changes for classes.
All unnecessary utility helper functions have been removed, including the polyfills for indexOf and bind.
The extends keyword now only works in the context of classes; it cannot be used to extend a function prototype. See breaking changes for extends.
Literate CoffeeScript is now parsed entirely based on indentation, similar to the 1.x implementation; there is no longer a dependency for parsing Markdown. See breaking changes for Literate CoffeeScript parsing.
JavaScript reserved words used as properties are no longer wrapped in quotes.
require('coffeescript') should now work in non-Node environments such as the builds created by Webpack or Browserify. This provides a more convenient way to include the browser compiler in builds intending to run in a browser environment.
Unreachable break statements are no longer added after switch cases that throw exceptions.
The browser compiler is now compiled using Babili and transpiled down to Babel’s env preset (should be safe for use in all browsers in current use, not just evergreen versions).
Calling functions @get or @set no longer throws an error about required parentheses. (Bare get or set, not attached to an object or @, still intentionally throws a compiler error.)
If $XDG_CACHE_HOME is set, the REPL .coffee_history file is saved there.