Build with libomp 11.1 and package it in the macOS wheel (isl-org#5679)

Fail build if newer libomp found
Install libomp 11.1.0 from old brew bottle for catalina (10.15)

make PaintUniformColor return by reference (isl-org#5566)

0.15.1 version bump (isl-org#4782)

0.15.0 version bump (isl-org#4778)

0.14.1 version bump (isl-org#4358)

v0.14.0 version bump (isl-org#4354)

0.13.0 version bump (isl-org#3529)

0.12.0 version bump (isl-org#2820)

version bump to 0.11.2 (isl-org#2589)

version bump t0 v0.11.1 (isl-org#2539)