Changelog:
- merging @Duce008 (derrechtschreibfeler on discord)'s efforts to support Folia servers - thanks! This is still experimental, let me know if you encounter any issues while running GoldenDupes on a Folia server
- added a config option to configure regex rules that decide if a material should be duped or not
example:
```
dupe-rules:
- match: "(.*_)?CANDLE$"
dupe: false
- match: ".*"
dupe: true
stack-to: 16
```
This ruleset prevents any candle from being duped (brown candles, yellow candles, etc). and allows all other items to be duped, but with a max stack size of 16.

All item material names are listed here https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/Material.html
If you have never worked with regex before, you can find an overview here https://gist.github.com/cat-lin-morgan/49bd128340e9e452f837b4fae76df091