load config from pyproject.toml (#143)

* load-toml

* move toml to extras_require

* fix linter, add hint

* Update toml PR

- always install toml deps, we can add it to all installs
- don't override the command line config values with the ones from the config files
- handle getboolean again for configparser
- be able to have both a toml and another config file, and both configs are taken into account

* Add changelog message for later

Co-authored-by: aakrivonos <aakrivonos@domclick.ru>
Co-authored-by: David-Wobrock <david.wobrock@gmail.com>

CHANGELOG.md

@@ -1,4 +1,5 @@
 * Renamed `master` branch to `main`
+* Add complete and working support for `toml` configuration files
 
 ## 2.5.3