Item Blacklist

This release adds per-dimension item blacklists and also makes the mod's commands op only (sorry for not doing that earlier)

Adding per-dimension item blacklists required changing the configuration system yet again, so I took the opportunity to migrate from GSON (the JSON library used by Minecraft and bundled with the game) to Jankson (A simple JSON library providing more features such as comments).

Mod users/server admins do not have to download any dependencies other than Fabric API, as the new library is bundled with the mod. But the config file has changed from item-blacklist.json to item-blacklist.json5, which means that mod users/server admins have to copy and paste the config from the old file to the new file.

Feel free to open an issue on GitHub if you experience any problems.

Important notice: People who want to use the mod must download the file without -sources in the file name. The one that contains -sources in the file name is to be used by those who wish to view the source code of the mod.