This is BukkitGames version 3.0.0! It will probably be the last update for this plugin. Version 3 should work with all future versions of Spigot and Minecraft.
BukkitGames was est. 2012 and quickly became very popular among server owners. When Bukkit and Craftbukkit were abandoned, development was moved to Spigot and the new, completely re-written version 2 of this plugin was released. With version 3 I added legacy support for future Minecraft versions. Development of this plugin has now been abandoned, as I don't have enough time and effort to continue the development of this plugin. Dear BukkitGames users, thank you for the past six years!