## TODO
- [x] Add basic calculation mechanism for saved time and recalculated time.
- [x] Integrate [clap.rs]() for command line argument parsing.
- [x] Add basic tests for the calculation mechanism.
- [x] Integrate basic flags:
- [x] `--help`
- [x] `--version`
- [x] `--duration-only`
- [x] `--time-saved-only`
- [ ] `--raw`
- [ ] `--unit`
- [ ] Add an efficiency indicator for the time saved based on the leftover time for the day.