Bayes-yplus

What's Changed
* Remove pseudo-voigt line profile by tvwenger in https://github.com/tvwenger/bayes_yplus/pull/4


**Full Changelog**: https://github.com/tvwenger/bayes_yplus/compare/v1.3.1...v1.3.2

**Full Changelog**: https://github.com/tvwenger/bayes_yplus/compare/v1.3.0...v1.3.1

What's Changed
* Model reparameterization by tvwenger in https://github.com/tvwenger/bayes_yplus/pull/3


**Full Changelog**: https://github.com/tvwenger/bayes_yplus/compare/v1.2.0...v1.3.0

- Adds integration testing
- Adds readthedocs: https://bayes-yplus.readthedocs.io
- Updates model to support `bayes_spec` 1.6.2