Xradar

* Add zenodo badges to README.md ({pull}`22`) by [mgrover1](https://github.com/mgrover1)
* Fix version on RTD ({pull}`23`) by [kmuehlbauer](https://github.com/kmuehlbauer)
* Add minimal documentation for Datamodel ({pull}`24`) by [kmuehlbauer](https://github.com/kmuehlbauer)

* Improve installation and contribution guide, update README.md with more badges, add version and date of release to docs, update install process ({pull}`19`) by [kmuehlbauer](https://github.com/kmuehlbauer)
* Add minimal documentation for CfRadial1 and ODIM_H5 importers ({pull}`20`) by [kmuehlbauer](https://github.com/kmuehlbauer)
* Add accessors.py submodule, add accessors showcase ({pull}`21`) by [kmuehlbauer](https://github.com/kmuehlbauer)

* Data Model, CfRadial1 Backend ({pull}`13`) by [kmuehlbauer](https://github.com/kmuehlbauer)
* ODIM_H5 Backend ({pull}`14`) by [kmuehlbauer](https://github.com/kmuehlbauer)

Setting up CI workflow and build, [mgrover1](https://github.com/mgrover1) and [kmuehlbauer](https://github.com/kmuehlbauer)

* First release on PyPI.