From https://rawgit.com/GeoffreyBooth/coffeescript/1.12.6/docs/v1/#changelog:

• The return and export keywords can now accept implicit objects (defined by indentation, without needing braces).
• Support Unicode code point escapes (e.g. \u{1F4A9}).
• The coffee command now first looks to see if CoffeeScript is installed under node_modules in the current folder, and executes the coffee binary there if so; or otherwise it runs the globally installed one. This allows you to have one version of CoffeeScript installed globally and a different one installed locally for a particular project. (Likewise for the cake command.)
• Bugfixes for chained function calls not closing implicit objects or ternaries.
• Bugfixes for incorrect code generated by the ? operator within a termary if statement.
• Now cake build:browser just creates the browser build, without also running tests on it. New task cake build:browser:full creates the browser build and then tests it.
• Failing tests now result in a nonzero exit code.
• Fixed a too-permissive “reserved words” test, and fixed a REPL test that was broken in Node < 6.

I’ve also changed the NPM module referenced in the installation instructions, README and elsewhere to be the coffeescript module, instead of coffee-script. The installation instructions now also mention the bit about the local vs global coffee command.