Doesn't traverse cyclic references in Dict.getAll; reduces empty-Dict garbage
Set max size for the group
Prescales shading pattern packed data indices
Balance smask process chunking
Implements WebGL support
Add enableWebGL to the preferences
Merge pull request #4286 from yurydelendik/webgl

WebGL and misc memory optimizations
Merge pull request #4374 from yurydelendik/dictgetall

Doesn't traverse cyclic references in Dict.getAll; reduces empty-Dict GC