py-make v0.1.2 beta

• framework (#17)
  • support Python 3.7 to 3.11
  • migrate travis CI => GitHub Actions (#17)
  • migrate nose => pytest
  • migrate setup.{py,cfg} => pyproject.toml
  • use setuptools_scm for versioning
• misc (#17)
  • remove Python 2 compatibility functions
  • fix DeprecationWarning
  • linting
• update README (#13)
• update Makefile (#17)