TreeAssist

This contains a small fix for chopping trees with fists. There is a config file change, but it is not required yet because the feature is not fully implemented (v4.3) yet. If you want to allow auto-chopping trees with hands only, change the Single Tool item to "0" for air.

I also began implementation of a requested feature: Config option to require players to have specific saplings in their inventories in order for auto-replant to work.

Think of this as a small-alpha release. I need some good input on features and such to add to the list as well.

Sometimes leaves 1 bottom block on giant jungle trees.