This update focuses on making the plugin customisable to your own liking with messages and items customisable in GUIs. Please remember to regenerate a new config.yml and a messages.yml for the new features to appear.
Just a note. I did this at 3 am (my time) so somethings might be wrong / not implemented. If I missed something just let me know and I'll add them.
Additions:
Added an option to hide the Spigot URL in the config.yml;
Added option to customise the GUI prefix in the main menu;
Added option to customise the command prefix when looking through the command help list;
Added the option to change main and secondary colors of the command help list;
Added the option to change the reload message;
Added the option to change the player not found message;
Added the option to change the default pickaxe name / colors;
Added the option to change the main and secondary colors on the custom pickaxes;
Added the option to change the NotEnoughXP message;
Added the option to change the PickaxeNotHighEnoughLevel message;
Added the option to change the MaxMinersCart message;
Added the option to change the UpgradedMinersCart message;
Made it so all the PyroMining tags on Fluxes and Augments are now changable through a message in the messages.yml;
Added a success and error prefix for when something works and when something doesn't. (E.g. Not enough gemstones)
General Changes:
Fixed some messages not changing despite them being changed in the messages.yml file.