TheDarklingWolf/Cataclysm-DDA — pull request #706 by i2amroy (2013-04-28 02:52:29+00:00)
Title: Set neutral attitude (anger = 0) to IGNORE.

Right now creatures with 0 anger will be ordered to track down the
player. It seems more realistic to have 0 anger creatures ignore the
player (as they aren't hostile). The end result of this is wildlife are
slightly less likely to attack if the player gives them a wide berth,
compared to before where they were guaranteed to attack eventually.