* Adds THREE.UnsignedInt248Type and THREE.DepthStencilFormat constants

* Extends DepthTexture to allow for either THREE.DepthFormat or THREE.DepthStencilFormat

* Extends depthTexture initialization to support both DepthTextureFormat and DepthStencilFormat

* Fixes typos

* Ensures correct internal format for DepthStencil textures

* Allows to set depthTexture via options.depthTexture in constructor

* move is* properties to prototypes and remove unused ones

* rebuild

* merge dev -> less-is

* remove rebuild from PR

* convert to ES modules

* rebuild

* move shaders back into glsl files

* reinstate polyfills

* Fix for background clipping when using logarithmicDepthBuffer feature

* Changed subdivisions from 5 to 4

* Whitespace fix

* clear coat implementation.

* add physical variations to examples.

* add example file for physical materials

* adjust clearcoat range to 0-1 as original.

* switch example color to gray from yellow.

* Fixed for non-HTML documents

* Replaced Image constructor with createElementNS

* Merging WebGLTextures.js

This didn't commit for some reason

* Separated out WebGLClipping.

* WebGLClipping: Named internal functions.

* Don't treat render targets like textures.

Expect Texture instances from now on. Added backwards compatibility
measures to ensure that render targets can still act as textures for the
time being. A deprecation warning will be given. Resolves #8615.

* Added comments to clear up RT-Cube detection.

* Revised the previously added comments.

* Added a TODO note.

Forgot to include this one in the last commit.

* Documentation: updated WebGLRenderTarget.

* Docs: added more Texture info to WebGLRenderTarget.

Also removed an unnecessary html line break.

* Docs: added a notification to ShaderMaterial.

WebGLRenderTarget and WebGLRenderTargetCube must not be used as
uniforms. Their texture instance must be used instead.

* Docs: revised a notification in ShaderMaterial.

* Removed useless and outdated ShadowMapPlugin docs.

* Consistified WebGLState, added culling.

* Let WebGLShadowMap set culling through WebGLState.

* WebGLShadowMap: Removed redundant state setup.

* WebGLRenderer: Removed needless factorization.

* Removed cull state mess from WebGLShadowMap.

- Instead flip .side on the depth material with the same effect.
- See #8760.

* Updated builds.

* merge bufferAttributeTypes with dev

* else if

* serialize the normalized flag

* update docs

* remove support for DataView as BufferAttribute source. This is to specific purpose, and geometry using this will break in too many other methods

* reimplement the DataView as a BufferAttribute data source

* try to warn when bufferAttribute contains a DataView and cannot be read

* Changed too many `warn` to `error`

* Code quality update in BufferAttribute datatype selection

* support load and save of normalized flag in BufferAttribute

* Check for DataView attribute buffers

* mend

* Revert "mend"

This reverts commit 1b4c87687d10fdaefd5007b98019b25d33c492e1.

* try to fix after --ammend causes conflicts

* working on cleaning this all up

* More whitespace cleanup

* more code style cleanup

* strike OBE comment

* more spacing cleanup

* MatrixN: Deprecated .flattenToArrayOffset.

Instead .toArray consistently allows array and offset to be passed.

* Updated math classes' docs .toArray / .fromArray.

* Automated uniform.<name>.type.

* WebGLRenderer: Added .setTexture deprecation stub.

* Updated ShaderMaterial docs, uniform types.

* Updated Quaternion docs .toArray / .fromArray.

* Updated Quaternion docs, static .slerpFlat.

* Updated math classes' docs, style consistency.

* Updated ShaderMaterial docs, style consistency.