Chat Message Library

• Fixed a NullPointer Exception when not entering a Header or Footer, kicking all connected players who receive that message
• Added Singletons
  • All text added to the Singleton is displayed on a single line
  • Modified the .object() method so it can take in both List<Text> or Text to allow for Singletons and custom objects.
• Fixed an error on startup caused by a null check failing
• Removed the /cml command from non-dev environments

First release, thngs will probably be broken.