Maintain CSRF authenticity token
Create changelog
Make it obvious where to listen for Turbolink events

It took me a minute to check the tests and confirm they're on `document`, may as well save people the time.
use :receive not :change
avoid creating unused results arrays

These functions are returning the results of their for comprehensions unnecessarily. Returning `undefined` ensures coffee doesn't store the results of the comprehensions, which is faster and less GC/memory intensive.
Merge pull request #202 from timruffles/patch-1

Make it obvious where to listen for Turbolink events
use return for nicer source/generated code
Merge pull request #203 from timruffles/patch-2

avoid creating unused results arrays
Update for Pull Request 203
Merge pull request #200 from reed/csrf

Maintain CSRF authenticity token - Fixes #171
Bump version to 1.1.1
github.com -> github.io