ColladaLoader: Check if surface is defined. Fixes #5431.
Merge remote-tracking branch 'origin/dev' into dev
Added webgl_interactive_cubes_ortho with @WestLangley code in 4b1742ce0a53c77d6104929124d85c65a53abde9.
Minor tweak to interactive cubes examples.
WebGLRenderer: Removed initGL function.
WebGLRenderer: Refactored extensions code.
Also trying to only call gl.getExtension() when needed.
WebGLRenderer: Refactored _compressedTextureFormats.
Updated builds.
WebGLRenderer: Fixed OES_element_index_uint handling.
WebGLRenderer: Request extensions that shaders may need.
Updated builds.
Merge remote-tracking branch 'upstream/dev' into dev
Merge branch 'dev' of https://github.com/BenediktS/three.js into dev