Merge pull request #2792 from swiftdocker/swift-3.1

Swift 3.1, baby!

library/swift

@@ -2,5 +2,8 @@ Maintainers: Haris Amin <[email protected]> (@hamin),
              Thomas Catterall <[email protected]> (@swizzlr)
 GitRepo: https://github.com/swiftdocker/docker-swift.git
 
-Tags: 3.0.2, 3.0, 3, latest
+Tags: 3.1.0, 3.1, 3, latest
+GitCommit: ef9aa534705fc8ab4258c539f6304072ebae9613
+
+Tags: 3.0.2, 3.0
 GitCommit: 94a43272fe6411c12045414cfc797d3c0bcf2823