auto fertilizer

I know it sound bad ,but I keeping a little plane dropping shit from it .that aside it would be nice to have crops grow faster.

adding to this have animal rez manure and do harvest on it

The current beta version of the animal script does have an option to have the animal 'auto poo' but it is still down to someone to collect up the manure and add it to crops, since animals are not so good at aiming their droppings!