Updated builds.
Vector*: Simpler negate code.
CanvasRenderer: Leave context state clean. Fixes #5039.
Updated builds.
WebGL: uv array bug #5054: fix
Editor: More work on ShaderMaterial support.
Updated builds.
UI.TextArea: Disable spellcheck.
UI.TextArea: Handle tabs.
Editor: Scroll TextAreas.
Simplified header.
WebGLRenderer's _buffers seems unused, remove it.
Merge pull request #5061 from wwwtyro/fix/_buffers

WebGLRenderer's _buffers seems unused, remove it.
Editor: Basic support for ShaderMaterial uniforms.
WebGLRenderer: Replaced uniforms if with a switch.
WebGLRenderer: No need to create location yet.
WebGLRenderer: Added more direct uniform types.
Updated builds.
Editor: Save uniforms.
Updated builds.