Port update port and take maintenership by Greg
Major changes:
- Linear compositing and spectral blending (pigment).
- Layer views.
- Brush strokes dependent on view rotation and view zoom.
- Additional symmetry modes: vertical, vertical+horizontal, rotational, snowflake.
- Expanded flood fill functionality: offset, feather, gap detection and more.
- New brush settings: offsets, gridmap, additional smudge settings, posterize, pigment.
- New brush inputs: barrel rotation, base radius, zoom level, gridmap x/y, direction 360, attack angle.
See full changelog for more details: https://github.com/mypaint/mypaint/blob/master/Changelog.md
PR: 235805
Submitted by: Greg V <greg@unrelenting.technology>
9d8aecae28