Move towards CxCarerixClient due to SOLID
Update in EventAdapter naming to consistently represent 'left-right' services
SOLID: Moves synchronisation details to their responsible readers
Logging in is now defered to readers
More refactoring
Interface segregation for the EventAdapter_CarerixGoogle.php
Update in Google iterator to skip private 'cancelled' items
Checking conflicts is now completely SOLID
CxSync should now be fully SOLID