Pig Manure - Poopin' Pigs!

Initial release for 1.9. Requires airbreathercore 1.0.2 or higher, which means Forge build 1805 or higher.

Marked as "Beta", because Forge completely replaced the mechanism that I used to make sure pigs don't reset their 5-10 minute timer every time you save / reload the world.  The new mechanism is not an exact match, and it's much heavier and more intrusive.  So even though I did do somewhat thorough testing, it's going to need to be hammered on a bit more in more situations before I'm comfortable with removing the "Beta" flag from this one.