Changelog

Unreleased 

Moved py.typed file to src/codepost_powertools so that it will be included in the distribution
Changed get_path() to not expect the starting directory to exist
- If the directory does exist, it is still required to be a directory.
Removed unnecessary checks in get_assignment()
- codePost does not allow multiple assignments to have the same name, so there was no need to check for it.
Better CLI help output with cloup
Added rubric group
- Added export_rubric() function / export command