Blender Git Loki

Cleanup: Clang format

Sculpt: Base code for gradient tools

Optimize fairing weights calculation

Merge branch 'master' into sculpt-dev

GPencil: Don't normalize strokes by default exporting PDF

If the stroke is normalized by default there are gaps.

Merge branch 'master' into greasepencil-object

Merge branch 'master' into temp-gpencil-interpolate

Cleanup: Clang format

Sculpt: Smooth Directional deform mode

Merge branch 'master' into sculpt-dev

WIP refactor of relationships handling in overrides.

Weight Paint: don't create weight entries if can't paint due to locks.

Merge branch 'master' into sculpt-dev

Preparte curvature fairing and Fairing edit mode operator

Merge branch 'master' into greasepencil-object

Merge branch 'master' into temp-gpencil-interpolate

Weight Paint: avoid creating very small values with locked weights.

When painting using Auto-Normalize or Lock Relative with some
groups locked, the locked weights may not add up precisely to
1 because of precision limitations, which results in creating
nonzero weights close to FLT_EPSILON. With Lock Relative display
mode this is very obvious and annoying (random red points amid
black or blue), so add an epsilon check to consider less than
1e-6 unlocked weight to be the same as 0.

USD importer undo bug workaround.

Skipping call to ED_undo_push() at end of the import,
as invoking this function appears to cause occasional
crashes. This logic should be restored once the
source of the crash is determined.

Merge branch 'master' into sculpt-dev

USD Importer Xform merge bug fix.

Disallow merging if parent isn't a UsdGeomXform.