Merge pull request #28 from apophis775/master

Minor fixes
While in Disarm intent, Aliens now have a 100% to tackle a *standing* human. However, if the human is already down, that chance gets reduced to 20%.
Merge pull request #29 from apophis775/master

Developer Rank added
Merge pull request #30 from rahlzel/upstream

While in Disarm intent, Aliens now have a 100% to tackle a *standing* hu...
Merge remote-tracking branch 'upstream/master'