Git

1. https://www.zdrojak.cz/clanky/jasne-umim-git/
2. https://www.zdrojak.cz/clanky/commitujte-jako-profik/
3. https://www.atlassian.com/git/tutorials/merging-vs-rebasing/

Code conventions

1. More important arguments first: getFeedByUser(user, permissions, time_provider, logger).
2. Trailing spaces on multiline arrays/lists/sets, maps/dictionaries, enums, ...
3. When method is too long and should be wrapped every parameter should be on separate line.

Patterns

1. https://stackoverflow.com/questions/1638919/how-to-explain-dependency-injection-to-a-5-year-old.
2. https://doc.nette.org/cs/2.3/dependency-injection
3. https://phpfashion.com/co-je-dependency-injection
4. https://www.zdrojak.cz/clanky/navrhove-principy-solid/
5. https://julien.danjou.info/blog/2016/python-exceptions-guide