Sncosmo

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- New zeropoint alias for improved SNANA compatibility (318)

- Add Roman filters (218, 322)

- Add the ability to a use SNANA co-add simlibs (247)

- Fix file paths for Windows users (324)

- Fix the builtins with poor spline options (203, 328, 329)

- Various improvements to code and repo management

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This release mostly involves modernizing the SNCosmo build system.

- Add Pan-STARRS1 bandpasses (212)

- Added support for wheels which should now be automatically uploaded to PyPI
for any new release (304).

- Fixed the Zenodo integration. New SNCosmo releases should now automatically
be archived to Zenodo.

- Moved citations to the new CITATION.cff format. GitHub and Zenodo will now
provide BibTeX entries that can be used to cite SNCosmo (302).

- Update to the emcee version 3 API. Now only compatible with emcee>=3.

- Migrate from Travis CI to GitHub Actions for continuous integration/tests
(293).

- Bugfixes:

- Fixed the implementation of the SALT3 error model (300).

- Fixed numpy type deprecations.

- Fixed the documentation for models (299).

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- Add SALT3 model from Kenworthy et al. (2021)

- Various documentation fixes

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- Add SUGAR model from Leget et al. (2020)

- Add support for the iminuit 2.0 API (291).

- Update tox to work with any version of Python 3.

- Bugfixes:

- Fix flatten_result bug due to API change (285).

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- Add Swift UVOT bandpasses.

- Bugfixes:

- Fix segfaults in bicubic interpolation.

===================

- Add core-collapse models from Vincenzi et al. (2019)

- New Spectrum class to handle processing and fitting spectral observations.

- Removed appveyor builds.

- Bugfixes:

- Prevent segfaults in light curve fitting when the minuit fit fails.