Add missing setFromObject method

document length parameter behaviour of <type>BufferAttribute

Examples: Inherit from Loader IV.

Examples: Inherit from Loader III.

Examples: Inherit loaders from Loader II.

Examples: Inherit loaders from Loader I.

zh doc: Sync with en doc and remove some old links.

Fix depthTexture types in WebGLRenderTarget.d.ts

Added depthTexture argument to WebGLRenderTargetOptions and changed depthTexture property on WebGLRenderTarget to be of DepthTexture type instead of Texture type.

LightningStrike: Make plasma sphere use physical transparency

Physical Shader: properly group indirect diffuse and indirect specular terms

Clearcoat Example: Added tone mapping

Addition of variance shadow maps