1.1.11: Adjusted dependency handling

• Update README.md
• Remove api-version from plugin.yml
• Adjust AnnoyingFile#load()
  • Now checks #canBeEmpty()
• Added required option to AnnoyingDependency
• Adjusted how dependencies are handled
• Remove commands from map on unload
• Use a more graceful command unregister
• Adjusted Javadocs
  • Added new Javadocs and modified existing ones
  • Renamed AnnoyingPlugin#reload() to AnnoyingPlugin#reloadPlugin()
• 1.1.11: Adjusted messages and dependencies
  • Moved AnnoyingUtility#getString(AnnoyingPlugin, String) to AnnoyingPlugin (now AnnoyingUtility#getMessagesString(String))
  • Renamed AnnoyingPlugin#unloadPlugin() to AnnoyingPlugin#disablePlugin()
  • If required dependencies are missing it'll tell the user ALL of the missing required dependencies
  • Added /test disable command to TestPlugin that will disable/unregister the /test command
  • Modified TestPlugin msgs.yml

Full Changelog: 1.1.10...1.1.11