Adds support for alpha blending in copyPixels.
Text field stubs.
Nicer image loading error message.
Don't show terminal line times by default.
Merge branch 'nat' of https://github.com/mozilla/shumway into nat
Merge pull request #1459 from mbebenita/nat

Updates to copyPixels.
Merge remote-tracking branch 'origin/nat' into nat

Conflicts:
	src/flash/display/BitmapData.ts