Blender Git Loki

Merge commit '1f33075ef043f0281c69a261c53eda0ce8334cbe' into fluid-mantaflow

post merge fixes and cleanups

Merge branch 'master' into fluid-mantaflow

janitorial services for 2.8

cleanups, cleanups, cleanups

fix for odd python assertion error

error was appearing when closing blender

manta script export refactor and lots of cleanups

Merge branch 'master' into fluid-mantaflow

minor cleanups

minor cleanup and fix memory leak (resulted from active fields commit)

improved cache resume functionality

it is now possible to resume an already completed bake

fix for active fields (cache read)

new cache does not save active fields, e.g. fire. so for now, just
reload them during cache read step

fix in python cleanup function

new motion blur vertvel vector was not being deleted. clearing all dicts before deletion now.

fix for particle system crash

fixes for motion blur support

- added missing velocity interpolation. vertvel vector now pulls data
from interpolated vel grid (needed especially when using different
solver sizes)
- added missing cleanup calls on the python end (i.e. delete new python
motion blur objects too)

Merge branch 'master' into fluid-mantaflow

small fixes for manta script export

added initial support for motion blur (cycles)

updated fluid guiding mode

mode now set by guiding object (and not by domain object). i.e. guide mode setting now only affects cells from guiding object

fix for smoke guiding and some cleanup

added guiding object velocity factor (UI option)