bugfix release (Outlawn)

Thanks to everyone who tried and commented on Outlawn -- the comments are very useful. I certainly agree that it lacks, and needs, a real game. I might try to add one for the pyggy competition -- not sure yet. (Maybe the current code will evolve into the level editor for that, as well as part of the engine.)

In the meantime, now that judging is over I can release a few minor bugfixes and new features that I added after judging started. So here is version 1.1 -- enjoy!

Notable additions and changes (see CHANGELOG and README for details):