1.0.1

Improved Al
Sheep regenerate wool
Caves can be far bigger and more expansive
Coal can be found in smaller or larger veins
Signs may now be placed on walls
Doors have a new icon
Mushrooms can grow anywhere in the shade, even on grass
New in-hand model/inventory icon for stairs
Levers, Stone Buttons, Pressure Plates, Iron Doors, unnamed red ore, red ore torch and red ore dust added
New bugs:
Signs (both wall and ground) will still remain after being deleted , this can be fixed by reloading your save.