EnderDragonTweaks v1.2.0

Changelog:

• Added separate config options for defeat announcement of one fight participant and multiple fight participants (#14)
  ~ Renamed defeat-announcement-message to defeat-announcement-message-one-participant
  ~ Multiple participants config option is called defeat-announcement-message-multiple-participants
• Added ability to run custom commands upon Dragon death (#6)
  ~ See the new config for more information
• Added clearer message for when a non-player kills the Dragon (e.g. a bed explosion)
  ~ When one player is present, they will be presumed to be the killer - otherwise the bed (or other strange damage source) gets credit for being the killer
• Added config versioning, so the plugin will warn you if your config is outdated and might not work
• Rename defeat announcement message config macro <players-in-end> to <participants>
• Fixed trailing commas in list of participants (#13)
• Minor code improvements