Maintenance release

0.22.2

Maintenance release

C++ back end:

• Clear table collection indexes early each generation.
  PR {pr}1272

Build system

• Use scikit-build as the build backend.
  PR {pr}1284
• Remove boutique arguments from setup.py.
  PR {pr}1288
• Remove setup.py.
  PR {pr}1291

CI and deployment

Several PRs resulted in the following changes:

• macos CI now runs on Apple Silicon runners
• macos wheels are now built for two recent Python versions for both
  x86 and arm64 platforms
• cibuildwheel is used to build wheels.
• docker images are only pushed for releases and not for each commit
  to main.