Info on how to port this when I release the changes [1.13]

[primetoxinz]

BetterWithAddons/src/main/java/betterwithaddons/interaction/InteractionBTWTweak.java

Lines 137 to 140 in e946bda

	if(RUSTY_MINESHAFTS)
	MineshaftGeneration.rail = piece -> ModBlocks.RUSTY_RAIL.getDefaultState();
	if(INFESTED_MINESHAFTS)
	MineshaftGeneration.supports = piece -> ModBlocks.TERMITE_LOG.getDefaultState();

This can be changed to

MineshaftGenerator.MINESHAFT_CHANGER.clear();
MineshaftGenerator.MINESHAFT_CHANGER.addChanger(new IngredientChanger(fence, termite_log));
MINESHAFT_CHANGER.addChanger(new IngredientChanger(new StateIngredient(Blocks.RAIL), rusty_rails));