Lvlspy

Added feature that removes transition data related to a level that was removed

**Full Changelog**: https://github.com/jaadt7/lvlspy/compare/v3.0.2...v3.0.3

What's Changed
* Updated connected level retrieval by jaadt7 in https://github.com/jaadt7/lvlspy/pull/3


**Full Changelog**: https://github.com/jaadt7/lvlspy/compare/v2.0.0...v3.0.2

New:

- Tests and linting have been added to the package integration.

- New methods to update a transition's Einstein A coefficient, retrieve upward and downward transitions from a level, and to retrieve a transition between particular levels have been added to the API.

Fix:

- A number of method names have been changed to align with pylint. These are backwards-incompatible changes.

What's Changed
* Brad by jaadt7 in https://github.com/jaadt7/lvlspy/pull/2

New Contributors
* jaadt7 made their first contribution in https://github.com/jaadt7/lvlspy/pull/2

**Full Changelog**: https://github.com/jaadt7/lvlspy/compare/v1.4.0...v2.0.0

Link's to the documentation in readthedocs have been added