50% Port, 50% Rewrite.

Essential changes to previous Bonsai Trees versions:

• All rendering is now using BakedModels for performance

• Bonsai Pots now have a GUI for easier handling

• Bonsai Pots now support various upgrades

• Soils can be fluids now

This is the first v3 release and thus will probably contain a few breaking bugs.
Please report!