* Get rid of offcanvas slide-in; fix sidebar
* We need to transpile docs.coffee, since Safari 9 throws an error on it and that’s too new a browser not to support; but this should also speed things up
* Fix some tabs
* Fix scrollbar
* Use Highlight.js to format placeholder code (during compilation, not rendering) before CodeMirror loads; match Highlight.js styles to CodeMirror styles as best we can
* Improve hash management
* Initialize CodeMirror on demand, on mouseover a particular code example, rather than all examples on startup
* Replace highlight.js with Prism for placeholder syntax highlighting
* Scratch Prism, use CodeMirror itself to do Node-based syntax highlighting, so that on CodeMirror initialization there’s no flash from mismatched highlighting
* Update packages; there’s a new version of Jison! (doesn’t change much)
* Fix mobile issues: use SVG play button icon, to avoid iOS blue square play button; make the code editor text 16px size explicit, to avoid unwanted mobile zoom; make the ‘code play’ buttons work even if the code examples are in placeholder (non-editable) mode, in case a user hasn’t moused over/tapped them
* Update docs output
* Whoops, CodeMirror is only a devDependency
* Update classes docs for CS2
* Port breaking changes from https://github.com/jashkenas/coffeescript/wiki/%5BWIP%5D-Breaking-changes-in-CoffeeScript-2 into new docs section
* Update browser compiler
* Update re @connec’s notes; split classes section into two sections for classes and working with prototypes; make breaking changes examples editable whenever possible
