Flodym

What's Changed
* fix erroneous nan-to-zero replacement in df to flodym array conversion by JakobBD in https://github.com/pik-piam/flodym/pull/101
* New model test: no negative flows by bennet21 in https://github.com/pik-piam/flodym/pull/96


**Full Changelog**: https://github.com/pik-piam/flodym/compare/v0.3.0...v0.3.1

What's Changed

* Improve parameter readin by JakobBD in https://github.com/pik-piam/flodym/pull/99
- add option to pandas-based parameter read-in to allow missing values in data, and to allow excess values
- improve read-in performance for sparse data
- add context (parameter name) to error messages in data read-in


**Full Changelog**: https://github.com/pik-piam/flodym/compare/v0.2.0...v0.3.0

What's Changed
* add apply function to flodym array by JakobBD in https://github.com/pik-piam/flodym/pull/92
* update plotting routines with more customization options by JakobBD in https://github.com/pik-piam/flodym/pull/94


**Full Changelog**: https://github.com/pik-piam/flodym/compare/v0.1.1...v0.2.0

What's Changed
* update installation readme after pypi release by JakobBD in https://github.com/pik-piam/flodym/pull/83
* update documentation by bennet21 in https://github.com/pik-piam/flodym/pull/84
* Update documentation by bennet21 in https://github.com/pik-piam/flodym/pull/85
* Updates and minor fixes by Merjo in https://github.com/pik-piam/flodym/pull/86
* update version, citation and copyright by JakobBD in https://github.com/pik-piam/flodym/pull/87

New Contributors
* bennet21 made their first contribution in https://github.com/pik-piam/flodym/pull/84

**Full Changelog**: https://github.com/pik-piam/flodym/compare/v0.1.0...v0.1.1

First release