css/declaration: add method_missing support
dom/event: fix alias_native behaviour in event subclasses
timeout: add Proc#delay helper
utils: fix #encode_uri
gem: update dependencies
dom: update DOM docs
gem: consider 0.5.5
canvas: add #point_in_path?
animation_frame: implement requestAnimationFrame
Merge remote-tracking branch 'upstream/master'

Conflicts:
	opal/browser/css/declaration.rb