Added support for generic events.
Commented code in the temp class App.java that generated warnings.
Version number increased: 2.0.7
[FIX] Generic events - added check on eventTypeUri with bad prefix
WatcherServer is now held in WatcherManager properly and closed on app
exit
XMLGregorianCalendarHelper-Throwables.propagate replaced with
RuntimeException
Performance and memory improvements: EventCache returs reader from its
query methods (not ArrayList), events are removed from EventCache by
their ID (not EventId).