Contacts macOS 10.12 to 10.13 API Differences

CNContact.h
Modified CNContact
Protocols
FromNSCopying, NSMutableCopying, NSSecureCoding
ToNSCopying, NSItemProviderReading, NSItemProviderWriting, NSMutableCopying, NSSecureCoding

CNContactRelation.h
Added CNLabelContactRelationSon
Added CNLabelContactRelationDaughter
CNContactStore.h
Modified -[CNContactStore defaultContainerIdentifier]
Declaration
From- (nonnull NSString *)defaultContainerIdentifier
To- (nullable NSString *)defaultContainerIdentifier

CNError.h
Added CNErrorCodeClientIdentifierInvalid
Added CNErrorCodeClientIdentifierDoesNotExist
Added CNErrorCodeVCardMalformed
CNPhoneNumber.h
Added -[CNPhoneNumber init]
Added +[CNPhoneNumber new]
Modified +[CNPhoneNumber phoneNumberWithStringValue:]
Declaration
From+ (nonnull instancetype)phoneNumberWithStringValue:(nonnull NSString *)stringValue
To+ (nullable instancetype)phoneNumberWithStringValue:(nonnull NSString *)stringValue

Modified -[CNPhoneNumber initWithStringValue:]
Declaration
From- (nonnull instancetype)initWithStringValue:(nonnull NSString *)string
To- (nullable instancetype)initWithStringValue:(nonnull NSString *)string