This update focuses mainly on providing annotations from which a CommandNode can be created. In addition, several annotation processors that perform static analysis on the annotations are also included.

Big Ol' list of changes:

• Added annotations from which commands can be derived
• Added annotation processors that perform static analysis on the annotations from which commands are derived
• Added AnnotationProcessor
• Added Element filters
• Added varargs overload to Literal.Builder#aliases(...)
• Added Literal.Builder#then(annotated, name)
• Added Alisable interface
• Added Mutable interface
• Added Commands#from(...) to create commands from annotated objects
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• Fixed aliases of children not getting added in Literal and Argument
• Fixed aliases of commands not getting registered to the server's internal CommandMap in Root
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• Bump Checker-qual to 2.8.1
• Bump Lingua Franca to 1.0.4
• Overhauled Literal and Argument to implement Aliasable and Mutable instead of Node
• Stricten Root#addChild(...) to throw an IllegalArgumentException if the given command does not inherit from LiteralCommandNode
• Stricten Root#register(...) and Root#wrap(...) to allow only LiteralCommandNodes instead of CommandNodes
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• Removed methods & support for Argument aliasing, it doesn't make sense since an argument does not have a concrete representation
• Removed Node interface