Fixed a minor bug with oncreate calls: when had oncreates, returned
out of endpoint initializer before setting flag that the endpoint was
ready.  Fixed now.
Added a test to ensure that onCreate-s worked between two endpoints
(not just one).
Began adding a TCP interface for connections.  Added test file as well.  Currently, it hangs for an unknown reason.  Also, still need to have connection object (or other) set the other endpoint's uuid.