Fix image loading events
Use custom closure compiler for extension builds
Fire AVM1 initialize, construct and load events
Merge branch 'master' of github.com:mozilla/shumway into avm1events
Merge pull request #1737 from yurydelendik/settimeout-trace

Implements priority time queue in trace tests
Merge pull request #1721 from tobytailor/closure

Use custom closure compiler for extension builds
Smarter / faster way of doing blending.
Merge.
Merge pull request #1720 from tobytailor/master

Fix image loading events
Merge branch 'master' of github.com:mozilla/shumway into avm1events
Disabling intermittent failure tests
Merge pull request #1738 from yurydelendik/inttests

Disabling intermittent failure tests
Change shortcut  key for profiler to be Alt + R so that it doesn't interfere with some content.
Faster/inlined unpremultiply that avoids some byte shuffling.
Add timeline events for image conversions.
Merge pull request #1739 from tobytailor/timeline

Make sure an object is of type MovieClip when calling _enqueueFrameScrip...
Merge.
Replaces python test.py with node.js version
Merge pull request #1741 from yurydelendik/newreftest

Replaces python test.py with node.js version
Bug 1071422 - Change all of Event's and important subclasses' methods to native implementations

This not only fixes the issue at hand, it also improves speed of mouse handling by speeding up cloning. And I guess it gives us slight startup speed improvements, too.