Sometimes the smallest of changes can have the largest effects. Case in point, this patch dramatically increases the stability, longevity and food production of forests simply by preventing herbivores from grazing the biome out from under trees. (which was killing the trees and destroying the forests. Aww, they think they're people).
* Creatures can no longer graze from a ground pixel if there's a tree on it.
* Trees can no longer spawn on ground pixels which are already occupied by other trees.
* Fixed Nurse bots escaping the nursery and running away. (Why does everything in this game try to escape the inescapable? Wait, better question: why do they keep succeeding?)
* Climate device effect radius increased