Op and deop commands now act a bit better, dropped the code that tells you whether the player is offline or not, ops the player otherwise, and changed the colors around. Else ifs combine code, and it makes the code look less messy, try to use this, as it does the same thing as multiple if blocks would. Gamemode command has more color. Added quite a few different CommandExecutor methods that are the basics, kicking, banning, and some more Javadocs.