* Update CoffeeScript to 1.11.0, which supports modules; update check for whether to pass CoffeeScript’s output to Babel to look not just for backticks, but also for `import`, `export` and `function*`, the current ESNext features output by CoffeeScript
* Add tests for imported modules using CoffeeScript’s new native import statement
* Test that CoffeeScript native export statements work, by importing something exported by such a statement
* Improve regex
* Optimize regex
