Pyp-beagle

- Enabling setting wl units for photometry plots as well (via the --wl-units option)

- Bug fix: now supporting negative fluxes (e.g. absorption lines)
- Removed dependency on WeightedKDE since scipy.stats now supports weighted gaussian_kde

- Merge pull request 46 from eclake/calibration_branch_new
- removing print statements and fixing bugs
- Update beagle_spectra.py
- Update beagle_spectra.py
- Update beagle_calibration_correction.py
- adding calibration_correction plot

- Removed dependencies which are already included in the Python Standard Library

- Fixing wrong module imports, fixes 44

- Modifying Github action badge
- Editing Github workflow
- Modifying the workflow to trigger the action at releases
- Adding workflow badge
- Changed Github workflow path and file name