Pull requests are welcome! Try to maintain the existing code style, but I don't have much else in the way of guidelines. Please reach out on Discord to @jtchips if you'd like to discuss changes you want to make.
I'm trying to document as much as I can in the docs folder.
I hope to make this plugin as easy as possible to update to future Minecraft versions in case I no longer want to maintain it. Please see Updating.md where I have outlined what I roughly expect to be the standard updating process.