Allows people to create mods that have flying structures, an example of the mod in use is Davincis Vessels. It also contains code for making your block function while in an entity state.
For contacting me quickly I'm available on #DavincisVessels on irc.esper.net
If you're currently looking into hosting a server give Exodus Hosting a try, I've used them in the past and never had any issues that couldn't be resolved by their support staff. Their servers are fast and reliable as well, if you're interested in getting a server click the logo below to get a great server and support further development of this mod at the same time!