testObjectWithCollectionOfExternalRefs test made more robust.
Conversely fixed bug in PersistentList constructor.
Logger updated for new API
Bugfix for contains, indexOf, lastIndexOf in PersistentList and testcase
Save and remove methods from Persitent object should return Future
Merge pull request #20 from nfrancois/saveFuture

Save and remove methods from Persitent object should return Future
Bugfix for PersistentObject remove()
v0.1.3
Upgrade for M4 changes. Obectory server now does not log messages my default, verbosity switched by command line parameter --verbose
v0.1.4
count() method implemented on all platforms, test case added
v0.1.5