Corrections to WEBGL_compressed_texture_atc spec and conformance test
Merge pull request #524 from toji/atc_update

Corrections to WEBGL_compressed_texture_atc spec and conformance test
Enum typo: INVALID_OPERATION -> INVALID_VALUE
Expanded oes-texture-float test to verify readback of floating-point values from the framebuffer if the implementation supports it.
Merge pull request #525 from kenrussell/impl-color-read-format-type

Expanded oes-texture-float test to verify readback of floating-point val...