Contacts iOS 11.4 to 12.0 API Differences

CNContact+Predicates.h

Added +[CNContact predicateForContactsMatchingEmailAddress:]

Added +[CNContact predicateForContactsMatchingPhoneNumber:]

CNError.h

Added CNErrorCodeRecordIdentifierInvalid

Added CNErrorCodeVCardSummarizationError

CNPhoneNumber.h

Modified -[CNPhoneNumber init]

	Declaration
From	- (nonnull instancetype)init
To	- (null_unspecified instancetype)init

Modified +[CNPhoneNumber new]

	Declaration
From	+ (nonnull instancetype)new
To	+ (null_unspecified instancetype)new