Installation:
1. Unpack ezpldatatypes.tar.gz in eZ publish extension directory
2. Login in to admin interface and enable extension Setup->Extensions
3. Clear the cache
4. Add new datatype to your content class
If you need translate class name and other messages to new language copy translation.ts file from extension/datatypename/translations/untranslated to new folder e.g extension/datatypename/translations/ger-DE and translate content with Qt Linguist.
Polish translation is included.
Compatible with eZ publish: 3.6, 3.7, 3.8