[ ] Felling trees should not make them explode, but produce a 'felled tree' that lies on the ground (hence felling a tree becomes constant-time again, like vanilla)
[ ] the felled tree can be cut down with an axe or saw (the tool has a 'range' to it, e.g. 5 blocks, so it will cut down the surrounding 5 blocks of the felled tree(s))
[ ] felled trees have a chance to 'rot' every n days (maybe require a certain humidity?); rotten trees have a chance to spawn mushrooms every m days
[ ] Felling trees leaves back a tree-stump (lowest block) where the tree was grown
[ ] The stump has a chance to grow a new tree of the same kind over time (mitigating the propagation requirement)
[ ] Removing the stump will need a siginificant effort / tools? (maybe a a draft-animal and rope/chains to pull it out of the ground?
[ ] Stumps can also be burnt out/away -> cover stump in hay or sth and set that on fire? Takes time and/or multiple repetitions? Stump could drop charcoal or fertilizer or sth?
[ ] Stumps can be used to propagate saplings of other trees (aufpropfen, https://de.wikipedia.org/wiki/Pfropfen_(Pflanzen) ); this would e.g. allow tropical plants to grow in colder climates, etc ?
Depends on #21
Cutting:
Planting:
Stumps: