* Build both a legacy and modern browser compiler
* Dynamic import example and documentation
* Update the docs to use the modern browser compiler if the browser supports it
* Update policy regarding Stage 3 features
* This never made sense, and assigning a string to index 0 *of a string* throws in Module mode (and silently does nothing in Script mode) so remove this unneeded code that throws when compiling `fn for i from from iterable` in Module mode
* Have browser-based tests use the ES module version if supported
* Simplify building logic
* Update output
* For the ES module version of the browser compiler, don't automatically attach the runScripts event handler
* Consistent comments
* Fix comment
* Update links to use https://coffeescript.org
* 2.3.1 changelog
* Bump version to 2.3.1; update output
* Forgot one
* Another one
* Lock Babel versions for Node 6 build to succeed, until Babel 7 is out
