Contacts iOS 10.3 to 11.0 API Differences

CNContact.h

Modified CNContact

	Protocols
From	NSCopying, NSMutableCopying, NSSecureCoding
To	NSCopying, 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