regrettably remove the animated button for download on homepage to improve page performance in some browsers

Fix Typeahead key navigation with Chrome + jQuery 1.8.0

Makefile misses a 'clean' directive

Improve .box-shadow mixin by utilizing regex function to no longer require escaping

Fixed a typo in docs/assets/css/docs.css

only stop prop on form – as people seem to be relying on dropdown hiding when clicking internal elements