that sorta behaves like our controllers in java. I might be able to make
this better.
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4161 542714f4-19e9-0310-aa3c-eee0fc999fb1
Made ObserverList work with a passed-in function, actionscript style.
I might reconsider some earlier decisions to go away from ObserverList.
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3952 542714f4-19e9-0310-aa3c-eee0fc999fb1