Serialization

• NSArchiver (don't use)
  • introduced 10.0, deprecated 10.13
  • NSCoding, take 1
• NSKeyedArchiver (probably don't use)
  • introduced 10.2, half deprecated in 10.14 to force upgrading to NSSecureCoding (10.8)
  • NSCoding, take 2
  • any type, as long as it conforms to NSCoding (and also NSObject -- ! -- which the docs don't say)
• PropertyListSerialization (maybe use)
  • introduced 10.2 (still viable)
  • only supports 6 types: NSData, NSString, NSArray, NSDictionary, NSDate, NSNumber
• JSONSerialization (maybe use)
  • introduced 10.7 (still viable)
  • used by Codable, when using JSONEncoder/JSONDecoder, I assume
  • can use it directly, or with an alternative wrapper like SwiftyJSON
• Codable (maybe use)
  • introduced Xcode 9
  • Swift-only
  • any type, as long as it's Codable

Third-party options: TBD