Removed contacts dictionary of AKAddressBook
Added property sortOrdering
Added method -kind
Method sectionKeyForName: is public
Method nameToDetermineSectionForSortOrdering: is public
Use contact’s kind property
Use instance methods
Renamed method +array:filteredWithTerms: to +array:filteredWithTerms:andSortOrdering:
Pass sortOrdering to contact constructor
Renamed method names not to pass unnecessary arguments