dmauro/Keypress — pull request #4 by richard77 (2012-12-19 19:27:23+00:00)
Title: Added IE8 support in coffeescript file

Although not intensively tested it seems to be working in IE8.
In short:
- Added Array.prototype.filter function (as IE8 lacks it)
- use window.event when passed event is empty in onButtonDown and onButtonUp
- use event.returnValue = false in case event.preventDefault() is not present.