I’m building source code using an Xcode project that has its “Swift Language Version” set to “Swift 4.” Even with this set, the project builds Swift 5.1 source code like, for example, implicit returns and Swift 5 source code using the new `isMultiple(of:)` method.  …

*** 1/3/2020  No longer works We believe the issue is “Unable to access iCloud Account, can’t find Cloud URL” ***   294 let containerURL = FileManager.default.url(forUbiquityContainerIdentifier: nil) 295 let documentDirectoryURL = containerURL!.appendingPathComponent(“Documents”) 296 let documentURL = documentDirectoryURL.appendingPathComponent(“myFile.txt”)   Fatal error: Unexpectedly found nil while unwrapping…