Up library requirements to OpenGL ES 3.1 (needed for the upcoming GL_SHADER_STORAGE_BUFFER)
Minor
Fixes for removing effects.
Reorganize the way we add and remove all Effects (do it through DistortedMaster and is POSTPROCES - adjust Bucket and SORT Nodes).
Buggy: removing effects does not work.
Small API simplification.
Fix 'Different Bitmaps' APP. Now 27 out of 31 APPs work.
Progress with support for Effect classes.
The library compiles now!