Unity: 
Melee
+In attack mode hold down the mouse to charge up attack strength and execute on object at the mouse cursor when released.
+Enemy melee. AI's can execute attack directly in front of them. Currently bugged due the origin of the attack being their feet.
Basic Magic.
+Add runes to a runebag, select runes and if the combination is a valid spell then the debug shows the spell to be cast when the cast button is pressed.
UI
+Switch between inventory, stats and rune bag by pulling the chain.
Scripted Object generation
+Added boolean properties (eg isRuneBag, isRune) for various object types.
+Added item_id to object interaction script.
+Moved sprite renderer back to subobject due to billboard rotation causing weird collision behaviour when the player is in contact
Exporter
+Code to support the above.
+New object type RUNEBAG