Blender Git Loki

don't use StepDescription abstraction in simulation code

initial step simulator abstraction

move simulation state to separate file

combine particle and world state in c api

implicitely convert StringRef to std::string

add missing const

add missing const

Merge branch 'master' into functions

Cloth: fix memory leaks from recent change

Mantaflow: Remove particle type additions from previous commit

Generated warning from bpy_rna.c should be safe to ignore for now

Merge branch 'master' into fluid-mantaflow

Mantaflow: Small fixes for a clean console

Merge branch 'master' into greasepencil-object

Merge branch 'master' into greasepencil-object

Conflicts:
source/blender/draw/engines/gpencil/gpencil_engine.h

add float hash

add test

remove unused macro

remove unused mempool

unify hash tables a bit

update the hashing template