This is the full release! The mod contains anything that I had in mind for it. I hope you enjoy. Please let me know if you need this version on 1.19.2, 1.20.1 or newer, in the GitHub Issues
This version added a new Zone system. Zones can be defined using the /flying zone restriction commands.
preventStartFlying player won't be able to start flyinginterruptFlying player will fall out of the air if they cross the border to such a zone. The fall flying state is canceledZones are stored persistently in the worlds using PersistentState. From testing, no performance issues have been observed, due to client and server side caching.
Also, at this point in time, displaying the shapes visually is not planned. If you need to know where shapes are located, use the print command. They will give you the center position, the shape, its size and the zone properties.
If you come across problems or have any other features in mind, let me know in the linked GitHub Issues page.

Changes default behavior of the "FallFlying" movement used with Elytras.