• Breaking Change
  • remove t.map and t.mapWithName (in general doesn't look serializable, needs more investigation)
  • remove t.prism (in general doesn't look serializable, needs more investigation)
  • change Type from interface to class and add S type parameter
    • remove t._A
  • add Type#serialize
  • add Type#is (in order to serialize unions and while we're at it, looks useful anyway)
  • remove t.is (now that there's Type#is is misleading)
• Experimental
  • add Flowtype support (@gcanti)