Version 4.4 introduces the 'config.yml'! This allows for user customization of the plugin. Three variables are able to be configured but more will be added in the future!
What you can change:
-prefix
Change the prefix to messages sent to the player by the plugin
-maxX
limit the amount of maps the image can be split by horizontally
-maxY
limit the amount of maps the image can be split by vertically