- Removed ballistae

Fixed bug wherein mage units could melee attack and used their melee attack animations (which looked rather silly, though I suppose getting whacked over the head with a tome would definitely hurt)

Removed the ballista's bonus against cities

Fixed a bug forcing Pegasus Knights to embark after Optics was researched
Rescaled the mage models to better match the size and number of similar Vanilla units

Fixed a bug causing the Ballista to be unbuildable and not recieve the correct promotions
Added unit flavors to all units so that the AI will be more likely to build them
Increased wind magic bonus damage versus flying units to 100% from 50%

Fixed bug causing wind mages and archers to only recieve their bonuses against flying units when attacking (i.e. the bonus did not apply correctly when defending -- now, it does).