* The `WebGLRenderer.currentActiveTexture` property has been removed.
* The `WebGLRenderer.startActiveTexture` property has been removed.
* The `WebGLRenderer.tempTextures` property has been removed.
* The `WebGLRenderer.textureZero` property has been removed.
* The `WebGLRenderer.normalTexture` property has been removed.
* The `WebGLRenderer.textueFlush` property has been removed.
* The `WebGLRenderer.isTextureClean` property has been removed.
* The `WebGLRenderer.setBlankTexture` method has been removed.
* The `WebGLRenderer.setTextureSource` method has been removed.
* The `WebGLRenderer.isNewNormalMap` method has been removed.
* The `WebGLRenderer.setTextureZero` method has been removed.
* The `WebGLRenderer.clearTextureZero` method has been removed.
* The `WebGLRenderer.setNormalMap` method has been removed.
* The `WebGLRenderer.clearNormalMap` method has been removed.
* The `WebGLRenderer.unbindTextures` method has been removed.
* The `WebGLRenderer.resetTextures` method has been removed.
* The `WebGLRenderer.setTexture2D` method has been removed.
* The `WebGLRenderer.pushFramebuffer` method has had the `resetTextures` argument removed.
* The `WebGLRenderer.setFramebuffer` method has had the `resetTextures` argument removed.
* The `WebGLRenderer.popFramebuffer` method has had the `resetTextures` argument removed.
* The `WebGLRenderer.deleteTexture` method has had the `reset` argument removed.
* The `WebGLRenderer` has 4 new properties: `maskTargetFramebuffer`, `maskSourceFramebuffer`, `maskTargetTexture` and `maskSourceTexture`. These are the new global locations of the mask framebuffers.
* `WebGLRenderer.createBitmapMask` is a new method that internally creates the Bitmap Mask framebuffers.
* `WebGLRenderer.clearBitmapMask` is a new method that internally clears the existing Bitmap Mask framebuffers, called as part of a resize event.
* `WebGLRenderer.enableBitmapMask` is a new method that starts the process of using the mask target framebuffer for drawing. This is called by the `BitmapMaskPipeline`.
* `WebGLRenderer.drawBitmapMask` is a new method that completes the process of rendering using the mask target framebuffer. This is called by the `BitmapMaskPipeline`.
* The `WebGLRenderer.nativeTextures` array has been removed and any WebGLTextures created by the renderer are no longer stored within it. All WebGLTexture instances are stored in the `TextureSource` objects anyway, or by local classes such as RenderTexture, so there was no need to have another array taking up memroy.
* The `WebGLRenderer.deleteTexture` method has a new optional boolean parameter `reset` which allows you to control if the `WebGLRenderer.resetTextures` method is called, or not, after the texture is deleted.
The `Multi Pipeline`, `Bitmap Text`, `Render Texture`, `Text`, `TileSprite` and `Camera` now all read the tint values from the public properties instead of the private `_tintTL` etc ones. They also now set the `tintEffect` value directly from the `tintFill` property, removing another conditional check.
The `WebGLRenderer.rebindPipeline` method has been changed slightly. Previously, you had to specify the `pipelineInstance`, but this is now optional. If you don't, it will use the new `previousPipeline` property instead. If not set, or none given, it will now return without throwing gl errors as well.
* `WebGLRenderer.normalTexture` is a new property that holds the currently bound normal map (texture unit one).
* `WebGLRenderer.setNormalMap` is a new method that sets the current normal map texture.
* `WebGLRenderer.clearNormalMap` is a new method that clears the current normal map texture.
* `WebGLRenderer.resetTextures` is a new method that flushes the pipeline, resets all textures back to the temporary ones and resets the active texture counter.
* `WebGLRenderer.setTextureZero` is a new method that activates texture zero and binds the given texture to it. Useful for fbo backed game objects.
* `WebGLRenderer.clearTextureZero` is a new method that clears the texture tha was bound to unit zero.
* `WebGLRenderer.textureZero` is a new property that holds the currently bound unit zero texture.
