Beta update for 1.5

Changed the wooden fence around the farm, town, etc to Zipprus' Overgrown Stone Fence. Added a second new mushroom, a multi-stalk variation of the other first new one. Choose between dig spots. Fixed dirt on the boulder cave in fall.

Compatibility to recolor the waterfalls to my colors. Replace your SEASON_z_extras files with the ones included. Also includes an overlay for updating the files should SVE's SEASON_z_extras tileset get updated since I'm not updating this file.