Move OptionalExt free functions into extension
Move OptionalExt free functions into extension

tranhieutt/Swiftz,CodaFi/swiftz,mpurland/Swiftz,ryanbooker/Swiftz,mpurland/Swiftz,CodaFi/swiftz,tranhieutt/Swiftz,typelift/swiftz,ikesyo/Swiftz,CodaFi/swiftz,ikesyo/Swiftz,ryanbooker/Swiftz,typelift/swiftz,ikesyo/Swiftz,mpurland/Swiftz,typelift/swiftz