This is the first plugin I've ever written so its very simple. All non-waxed variants of copper blocks can be placed in water, and will oxidize one stage, with a message on screen about the stage progression. It will not continue to convert to the next stage unless you break and re-place the block, giving you proper control over how far you want it oxidized.
As of right now, the block must be placed IN a water block, with other water around it to oxidize. I intend to look over it soon and make it so flowing water will also affect it.
(This means right now, if its just a single block of water, and the copper replaces it, it will not oxidize. Think about a column of water source blocks or a body of water - this will currently work).
This will have no effect on waxed variants, so you can still use these to build underwater and retain the correct level of oxidation.
I couldn't think of any configurable options, so no folder or config.yml is generated - it should just work out of the box.
Only language support is English right now - I'll figure that out later on.