Fix issue where exceptions in onFrame handlers block future animations.
Add missing DOCS comments.
Update to latest Straps.js and remove unnecessary isArray argument in Base.each()
Make directly setting view.onFrame work again.
Update to latest Prepro.js and switch from global options object to __options, to avoid name clashes.
Support passing DOM element IDs in calls to #importSVG()
Correctly apply matrices to Raster items in #importSVG()

Closes #337.
Use renamed __options object in build script too.
Improve and streamline key-handling logic.

Moving most logic into the private handleKey() function.
Fire key-up events for all currently pressed keys.

Closes #353.
Merge git://github.com/paperjs/paper.js