Smaller smilies in collision_test. Gives a better view of what's happening with hundreds of entities colliding.
Disable audio on Mobile browsers (again) because it apparently cannot be fixed. Maybe the Web Audio API will help?
Added a `me.sys.isMobile` boolean flag, and added detection of BlackBerry and Windows Phone
[#164] Prevent TypeError with invalid `me.game.remove(null)`
[#196] Allow `alpha` and `volume` to be set to 0.

- Bonus: Fixed an error message!
ticket #196 : use explicit type check when checking the given parameter
use a regexp when checking for MSIE
Merge branch 'master' into ticket-103