replace bearing with rotation
update CHANGES.md
Merge branch 'master' into replaceBearing

Conflicts:
	CHANGES.md
clean up
Firefox still needs `-moz-box-sizing`, Chrome has it un-prefixed.
More Context.draw cleanup
Precompute vertex count for vertex arrays
Merge pull request #1260 from AnalyticalGraphicsInc/replaceBearing

Replace 'bearing' with 'rotation'
Merge pull request #1273 from AnalyticalGraphicsInc/box-sizing

Firefox still needs `-moz-box-sizing`, Chrome has it un-prefixed.
Fix warning with new JSHint version.
Merge remote-tracking branch 'origin/master' into ddr
Merge branch 'ddr' into gltf