fixed issue with startup config options.
fixed concurrent problems with ConcurrentSets.
updated beacons property in BCMicroLocation.
fixed bug in beacon visit tracking with adding start and end dates.
added fail check for operations.
updated events to use interface for IBCEventFilter.
updated local storage, caching of sites and apps, fixed bugs with start up, changed operators as threading failed silently, added custom values to categories, sites and beacons, updated some event filters