Placeholders are now never removed from the delivery manager.  Removing the 'optimisation' that stopped sending a rho > 0 if the original message has already been delivered allows this to be possible.  In hindsight, the optimisation would never have worked as it violates the multicasting guarantees.  This is because the local message may have been delivered due to a timeout, not because all nodes have acked it.
Test now utilises log instead of system.out for alerting a new view. Necessary for crash test
-- New tests folder created that will house all tests associated with my research
-- Test.java given a more meaningful name and moved to the abservice tests folder
Tests moved to new ABService test folder