Added support in config file for defining desired colors
Added more tests
GUI editing, working, really hacky
Added some validation
Small code cleanups
More progress
set_planning_date change
Prettier Exception message
Modified everything to Class form
Code cleanup
Code refactor, cleanup
Added get/set for due date
Due date cleanup
Working GUI
Version number bump
Code cleanup
Code cleanup and error catching about date parsing
Code cleanup, added custom exceptions