Pygmm

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- Added Abrahamson, Gregor, Addo (2014)
- Added Abrahamson & Gulerce (2011)
- Added conditional mean spectra models.
- Added Scenario objects.
- Added typing for all classes.

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- Added Hermkes et al. (2014).
- Improved documentation.
- Added Baker & Jayaram (2008), Kishida (2017)

.. _section-1:

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- Nothing changed yet.

.. _section-2:

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- First release on PyPI.