Kenshin's Hide And Seek

This is a larger big fix release, with a few changes under the hood, and a few new features to boot.

I also want to thank a first time contributor Barnus30 for some work he did for this release.

Features:

• Configurable item slots for lobby, spectator, and game items (Barnus30)

Fixes:

• Block placements are now canceled for players in game (Barnus30)
• Fixed player role overlap and memory leaks (Barnus30)
• Improved support concurrent server threads which also improves plugin stability
• Updated dependencies
• Fixed an issue where players were teleported into a world before it was loaded, crashing the server
• Fixed an issue with loading bukkit materials, causing errors during tab completion
• Cached minecraft materials, items, and effects for improved speed
• Properly reset team list on game reset
• Inventories and scoreboards are now also saved for spectators
• Removed non required libraries from the jar to make it smaller (slightly)