Docs: Added basic guide for post-processing.

Add missing declaration files

Math: Remove closures part II.

Update WebVRManager.d.ts

Update UVsDebug.d.ts

Update SkeletonUtils.d.ts

Update ShadowMapViewer.d.ts

Update MathUtils.d.ts

Update NodePass.d.ts

Examples: materials channels clean up

Conserve shadow map texture slots

Euler: Fix gimbal lock precision

MaskPass: Add stencil state locking in MaskPass effect

Docs: Added page for EffectComposer.

Examples: prevent pointer events on info div