Merge pull request #191 from apple/revert-187-remove-sub-libraries

Revert "Remove Real and Complex _libraries_; keep modules."

Author: stephentyrone

Package.swift

@@ -16,7 +16,9 @@ let package = Package(
 
   name: "swift-numerics",
   products: [
-    .library(name: "Numerics", targets: ["Numerics"])
+    .library(name: "ComplexModule", targets: ["ComplexModule"]),
+    .library(name: "Numerics", targets: ["Numerics"]),
+    .library(name: "RealModule", targets: ["RealModule"]),
   ],
 
   targets: [