miutil v0.12.0 beta

• fix setup.py install for matlab.engine (#32, #31)
  • PEP440 non-compliance work-around (vis. pypa/setuptools#3772)
  • fallback to pip install
  • improve error messages
• misc build/test/framework updates (#32)
  • migrate setup.{cfg,py} => pyproject.toml
  • bump minimum nibabel version
  • bump pre-commit
  • fix deployment