Summary
The release was dedicated to a total API reference layout overhaul.

/2.1/... changes
Type Endpoint Description
Improvement API Reference The Layout and design was completely restructured to offer a more organized and clean representation of the documentation.
In addition, a search function for endpoints was introduced
Improvement API Reference The documentation for "Applications", "Changelog", "Directory Interaction" and "Features" was revisited and extended.
Improvement GET /meta The value fields=parent_id was introduced to the endpoint. It allows to request the pid of the parent directory.