This update does not contain any feature changes. The only thing that has changed is that the .jar files are now hosted on GitHub. (Don't worry, the download button on Spigot will still work and provide you with the latest version of the plugin).
I've also removed the adapters for Minecraft versions prior to 1.14, and removed the adapters for WorldEdit 6.X and WorldGuard 6.X. The reason for this is that ARM is no longer compatible with these old server versions anyway, so these adapters just bloat the codebase without being used.
I would also like to mention that I have started writing better documentation for the plugin. The wiki page in github has been mostly revised:
https://github.com/alex9849/advanced-region-market/wiki
For developers, I have set up a nexus to get software artifacts from ARM for developing new plugins that hook into ARM. Instructions on how to use the nexus can be found here:
https://github.com/alex9849/advanced-region-market/wiki/API