Update 0.17

Towers, cannons and ballista will now send a message if ran out of ammo/mana.
Added option to toggle fishing on/off in the AI Manager.
Added more options to the new map screen.
Added dried up water tiles in desert regions.
Enemies killed by towers, cannons or ballista will now drop XP orbs, these can be used by villagers to increase XP.
Fixed bug where knight and dark knight were not using the training dummy.
Fixed bug where gas vents and ore veins were being highlighted for pickup.
Minor bug fixes