Merge pull request #335 from kishikawakatsumi/swift4

Fix for Swift 4

.travis.yml

@@ -3,9 +3,9 @@ osx_image: xcode8
 cache:
   directories:
   - Lib/vendor/bundle
-before_install:
-- brew update
-- brew outdated carthage || brew upgrade carthage
+# before_install:
+# - brew update
+# - brew outdated carthage || brew upgrade carthage
 install:
 - "(cd Lib && bundle install --path=vendor/bundle --binstubs=vendor/bin)"
 before_script:

Lib/KeychainAccess/Keychain.swift

@@ -1639,7 +1639,7 @@ extension CFError {
     var error: NSError {
         let domain = CFErrorGetDomain(self) as String
         let code = CFErrorGetCode(self)
-        let userInfo = CFErrorCopyUserInfo(self) as! [NSObject: Any]
+        let userInfo = CFErrorCopyUserInfo(self) as! [String: Any]
 
         return NSError(domain: domain, code: code, userInfo: userInfo)
     }