GC Memory Fix and Frame API update

-Fixed Memory leaks which would cause crash around 60second mark (GC
interval) for list-based objects using extended and append
-Added appendTools and appendFingers to pointableList
-LeapFrame got its API updated to include all of the missing functions,
should now reflect the leap api nearly completely (except 64bit values
in blueprint that are not supported)
-Added log entry with plugin version at game start for easier debugging