v3.0.dev1

build

• Build and test automation using tox, with environments for:
  • isolated build
  • linter, formatter, import order checker
  • documentation builder
  • unit testing with test report
• setup.py sections ported to pyproject.toml
• single version number, in pyproject.toml
• Cython version restricted to stable releases
• Unit tests added for source distribution and package content check

breaking changes

• Python 3.7 support dropped
• macOS 10.15 support dropped, minimum supported version is 11
• py_to_string and string_to_py functions removed from pyrfc interface