Merge pull request tristanhimmelman#459 from Hearst-DD/mappable Mappable

Merge pull request tristanhimmelman#403 from pixel4/add-nullable-from… …-json Add the ability to reset object properties to `nil` from JSON

Merge pull request tristanhimmelman#392 from Hearst-DD/bitcode Bitcode

Enabled bitcode for watchOS and tvOS 

40-50% performance fix 

Merge pull request tristanhimmelman#379 from zulkis/master JSONDictionary public getter

Updated deployment targets 

Fixed spelling mistake 

Performance fix: created two valueFor functions (one for dictionaries… … and one for arrays) to remove the need to cast the JSON dictionary input Casting the dictionary was very slow especially given a large JSON input

- added missing compile sources to tvOS target