New
- 257 - check file naming of nativesdk only recipes
Enhancements
- 251 - add support for `subdir` option in git fetcher
Misc
- 254 - reenable flake8 in testing and fix all the warnings (thanks HerrMuellerluedenscheid)
- replace mutables by immutables in function signature (thanks HerrMuellerluedenscheid)
- typo fixes (thanks HerrMuellerluedenscheid)
- gitignore for pycharm (thanks HerrMuellerluedenscheid)