Also created global uniformGroup
Broke up webGL to projection / renderTexture manager
I’m on to something here! Almost there..

Base texture replaced..

# Conflicts:
#	src/core/Shader.js
#	src/core/renderers/webgl/WebGLRenderer.js
#	src/core/renderers/webgl/filters/Filter.js
#	src/core/renderers/webgl/managers/FilterManager.js
#	src/core/utils/index.js
#	src/interaction/InteractionManager.js
#	src/interaction/InteractionTrackingData.js
#	src/interaction/interactiveTarget.js
#	test/core/WebGLRenderer.js

The `vertSize` is 5 , but the content is not `positionX, positionY, colorR, colorG, colorB`.

* fix SpriteRenderer for multiple webgl renderers, fix tests, add "withGL"

* isWebGLSupported renamed to withGL

* Added legacy option to webGL renderer

Setting ```legacy``` to true now forces VertexArrayObjects and
MultiTexture Batching to be disabled. We also store the variable on the
renderer just incase we want to use it to force settings in anything
else.

also added a test

* remove WebGLTests as they don't work on server

* Added extra param to Application

* Adds WebGL test for legacy

* Better check for WebGL in tests

# Conflicts:
#	src/core/renderers/webgl/managers/FilterManager.js
#	src/extras/cacheAsBitmap.js

Setting ```legacy``` to true now forces VertexArrayObjects and
MultiTexture Batching to be disabled. We also store the variable on the
renderer just incase we want to use it to force settings in anything
else.

also added a test

# Conflicts:
#	src/mesh/webgl/MeshRenderer.js

# Conflicts:
#	src/mesh/Mesh.js

it could offer a bit little performance gains.

* limit alpha number to 255. at rendering.

Avoid alpha flickering when it passes 1.0

* added space after comma

* Update annotation: `SpriteBatch to SpriteRenderer`

PIXP 4.x  no SpriteBatch

* more

Discovered that using this kind of code:

```const { MY_SETTING } from settings;```

means that changing settings properties has no effect as the objects
are being set before the user changes them.

* vertexCount is number of last used buffer. Always 0 in one "if" branch, 12345 in the other.

* fix for @GoodBoyDigital

* lints are still here :(

# Conflicts:
#	src/core/Shader.js
#	src/core/renderers/webgl/filters/Filter.js
#	src/core/sprites/webgl/generateMultiTextureShader.js
#	src/extras/webgl/TilingSpriteRenderer.js
#	src/mesh/webgl/MeshRenderer.js

* Made const that are setting writable

* Moved more items to the settings

* add SpriteRenderer expectation

* destroy fix

* mock webgl

* added existence check prior to destroy

* allow immediate destroy