Much update.

Reformat whitespace in pom.xml.
events->event
handlers->handler
modules->module
scoreboards->scoreboard
tanksinfo->tank
Cuboid->CuboidUtil
New Messages.
Remove potion effects in Battlefield.removePlayer()
Fix BattleFieldStorage.createField() & BattleFieldStorage.removeField()
Add BattleFieldStorage.getPlayerField().
Add CommandManager for sub command handling.
Each sub command has it's own class implementing ICommand from LUC.
MTCommands->MTCommandExecutor
Added implementation of exceptions of LUC and custom exceptions:
FieldAlreadyExistsException, FieldDoesnotExistException.
Added Reference class with Messages and Perms sub-classes.
Removed Menus and moved all of it's relevant information to the main
class.
MineTanks.battlefieldStorage, MineTanks.prefix, MineTanks.tankSelection
are static.
Modified IconMenu to use List<String> instead of String... and String[].
Tanks now have automatic Id set up for easier coding.
Cannons-Cannon
Engines->Engine
Radios->Radio
Fixed version in plugin.yml.