Blender Git Loki

Fixed gwn (atan2 instead of atan), and some perf speedups.

Boolean coplanar cone-on-cube works.

Needed some work on coplanar faces that may have
reversed normals from projection.

Attempt to do boolean with coplanar faces - doesn't work yet.

Forgot to initialize an intset.

Plumbed through faces that are on both sides of boolean op.

Keep track of other orig faces besides eg for a face.

Regression tests 0-25 all pass.

Code was working but had commented out actual apply of meshchange.

clang-format

Most regression tests now pass.

Put in option checkbox in UI so can choose old or new method.

Stash changes.

Coplanar case works except CDT makes a face with repeated vert.

Changes to master for this branch.

All tri-tri non-coplanar tests work.

Merge branch 'master' into tmp-overlay-engine

# Conflicts:
# source/blender/draw/modes/paint_texture_mode.c

Overlay Engine: Change Antialiasing implementation to a novel method!

Mantaflow: Flame vorticity fix

Overlay Engine: Fix Sculpt Mask overlay

Merge branch 'master' into greasepencil-object

GPencil: Change tooltip

GPencil: Fix Time modifier error for frame Zero