Using browser package for dart.js in test_runner.
Cleaning up the Viewport class. Moving the depth range to the class.
Adding tests for the Viewport class.
Removing trailing whitespace
Adding initial viewport test in the GraphicsContext suite. The initial verify functions now return the number of expected calls.
Adding CompareFunction enumeration and associated tests.
Fixing library name in compare_function_test.dart
Fixing default return value of stringify
Initial reworking of DepthState.
Adding range checks to width, height, minDepth, maxDepth within viewport. Associated tests created.
Adding tests for DepthState.
Making Blend serialization names private
Making BlendOperation serialization names private
Making CullMode serialization names private
Making FrontFace serialization names
Adding tests for GraphicsContext.setDepthState.
Merge upstream master branch. Adding back in aspectRatio to Viewport.
Commenting out equality operators for DepthState and Viewport.
Merge pull request #21 from donny-dont/cleanup

Cleanup DepthState + Viewport