Merge pull request #5 from dead1ock/various_features

Pet stuff.
Container system should work better, but still contains some subtle issues with movement while on a vehicle.
Merge branch 'various_features' of github.com:rcythr/swganh into various_features
Awareness creates/destroys now get sent in more cases. This seems to have fixed some of the issues involving players and swoops. Remaining issues seem to be due to out of order packet slowness. These issues shuld resolve themselves when the server is built in Release mode.
Sequence messages can now be followed up by a callback.