Check that typed array prototype chain is correct
Add more error conditions to getBufferSubData
Add FragData/FragColor test to test list
Reflect the change to union parameter types in texture function docs

There were still lingering references to the old parameters in the spec,
which are cleaned up by this commit.
Elaborate on not supporting program binaries in WebGL 2
Merge pull request #623 from NVIDIA/webgl2-programbinary

Elaborate on not supporting program binaries in WebGL 2
Merge pull request #620 from NVIDIA/array-unit-tests-edited

Check that typed array prototype chain is correct
Merge pull request #621 from NVIDIA/add-missing-test-to-list

Add FragData/FragColor test to test list
Merge pull request #622 from NVIDIA/teximage-spec

Reflect the change to union parameter types in texture function docs
Merge pull request #619 from NVIDIA/getBufferSubData-spec

Add more error conditions to getBufferSubData