Rewrote a significant portion of the deletion process to be cleaner
Added new subcommand 'check' to display chunk visit/hook status
Added new subcommands 'flag' and 'unflag' to edit flags on chunks
Added new alias '/rgr' for '/regionerator'
Added hooks for vanilla's spawn protection, Feudal, and Residence. Please note that as I do not have an environment set up using either plugin, neither hook has been tested. Be sure to test any new hooks you intend to use on a development server before pushing them live.
Expanded API slightly to better support plugins seeking to add their own hooks. All external hooks must extend PluginHook to be registered.
