Seapipy

What's Changed
* Documentation upgrade
* pytest is only used for testing purposes


**Full Changelog**: https://github.com/borgesaugusto/seapipy/compare/v0.2.0-alpha...v0.2.1

What's Changed
* Various version bumps and reconditioning to PEP 621
* fix get_coordinates() in Lattice now returns proper coordinates https://github.com/borgesaugusto/seapipy/commit/d2f36a98b2d819a80906d9fab47bd549656a03d9

**Full Changelog**: https://github.com/borgesaugusto/seapipy/compare/v0.1.0-alpha...v0.2.0-alpha

First release of seapipy