Update to Swift beta 3
Update to Swift beta 3

CodaFi/Swiftx,mpurland/Swiftx,DanielAsher/Swiftx,sendyhalim/Swiftx,CodaFi/Swiftx,typelift/Swiftx,typelift/Swiftx,mpurland/Swiftx,CodaFi/Swiftx,mpurland/Swiftx,pomu0325/Swiftx,typelift/Swiftx