* Updated for 6.3

* Restored the Siege Attacker trait for all light artillery units, as it is impossible to make them unable to directly attack walled settlements without scripting.

* Restored Siege Attacker to the Casket of Souls as it deals enough damage to walls and gates to be put in the Heavy Artillery category.

* Updated for 6.1.3
* Removed Siege Attacker from Alarielle's Tree Kins

* Added back Taurox to the list of Siege Attackers.

* Removed Siege Attacker from Flame Cannon and Magma Cannon as they don't categorize as Heavy Artillery.
* Reverted changes to the Warp-Grinders. Being a special unit that's particularly useful against walls and gates, they should retain Siege Attacker.