Updated the Russian translation thanks to VermilParsifal.
Fixed
The plugin can now automatically fix phantom kingdom blocks during bucket fills.
Fixed an error caused by /k chat command.
Fixed invasions.yml -> nation-zone -> capital-only option not working at all.
Fixed a rare issue with holograms.
Fixed an error caused by protection signs in offline servers when the owner of the protected block is a username that has no associated Minecraft account.
Fixed a rare server crash caused by MassWars.
Others
Improved the plugin hash check. It should now work on jars downloaded from spigot as well.
Added more information that may help in tracking some bugs.
GUIs that display a large amount of player skulls (like nexus members GUI) will now allow the player to interact with the GUI without delay and update the skull textures when complete.