removed
- `wheel` is no longer a install-requirement, only a build requiremnt (if user wants wheel support, he can install it, but we shouldn't force it)
- `tests_require` from `setup.cfg`, it's not used anyway
changed
- small README formating fixups
- simplifyed dev-install. `requirements.txt` now containes the editable-self-install. one less setp is reuqired for setup.
added
- `mdformat` as pre-commit hook