Blender Git Loki

Fix (unreported) LibOverride creation adding things to linked collections.

This is strictly forbidden, and sill cause crashes with undo in some
cases...

Fix T79066: Entering Edit Mode when Viewport Display set as Wire or Bounds leads to crash

LineArt: Completely remove now obsolete LineLayer structure.

LineArt: Cleanup function names into _lineart_category_operation() format.

Refactor: move functions out of Importer class

No functional change

WIP: FluidSpec for Fluid simulations

Merge remote-tracking branch 'origin/lanpr-under-gp' into lanpr-under-gp

Merge branch 'master' into soc-2020-fluid-tools

Cleanup: convert unsigned to signed comparison in assert

Thanks to Campbell for pointing this out.

Cleanup: spelling

Fix UV edge/face sync selection from recent sticky select cleanup

Cleanup: simplify sticky UV selection

Use BMesh connectivity information instead of looping over all
geometry to flush the sticky selection.

UV: remove selection threshold for nearby coordinates

Internally UV selection considered close UV's to be connected.
While this could be convenient in some cases,
it complicates logic for more advanced selection operations that
need to check when UV's should be considered part of the same vertex
since simple threshold checks would give different results depending
on the order of UV's tested.

Users must now run "Merge by Distance" instead of relying
on this selection threshold.

Cleanup: improve comment for disabled readfile allocation naming

Also allocate the required amount instead of a fixed size.

arap as default though

added nonlinear local step

Outliner: Fix uistack reorder highlights

Property Search: Properly filter labels for color buttons

Fix T78733 Bevel sometimes produces zero-area UV face with odd segments.

A bug introduced when I made the choice of interpolation face cleverer.

Merge branch 'master' into property-search-ui