Version 1.3, Fixes, improvements

Version 1.3, Fixes, improvements

Changed turn-based-battle start behavior to also start when a hostile
mob targets a player or entity in battle.
Added config option to revert to old-style battle starting behavior.
(Since config version updated, older config will be moved and the new
config will take its place.)
Changed mob attack target in Battle to whatever they were targeting (via
a call to "getAttackTarget()").