Blender Git Loki

use particle function for gravity force

create particle function more centrally for offset handlers

Merge branch 'master' into functions

Merge branch 'master' into functions

use threading again

use particle function in Age Reached event

fix double free and optimize when particle function inputs have no dependencies

handle type extensions as references instead of pointers by default

use function bodies as references instead of pointers by default

rename

simplify usage of particle functions

do more checks when debugging

fix false positive memory leak

remove tests because their are more trouble than they are worth currently

use particle function in turbulence node

introduce force interface

use particle function in trails node

further simplify usage of particle function

improve particle function

rename