Tricksy Foxes

Significant graphical upgrades in the UI, still not completely finished however. When adding a node, you can also now hold sneak to add it to the top of the children list instead of the bottom, which is quite useful when retooling an existing behaviour tree.

Multiple new node variants: Insert Item, Extract Item, Sort Nearest, Block Powered, For Each, plus minor behavioural tweaks for some existing nodes.

Node variants now have optional input values, these are indicated by their italic names and greyed-out values in the tree screen. These values don't have to be filled in for the node to function, but can provide a little extra control if need be.

This update WILL break your existing behaviour trees, but the worst that should happen is simply that they don't do anything.