Swift 3.1 - rebuild all frameworks, clean up all swift warnings (#421)

* Rebuild all frameworks with swift 3.1

* Resolve all Swift 3.1 warnings

Author: Bharat Mediratta

.travis.yml

@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode8.1
+osx_image: xcode8.3
 # xcode_sdk: iphonesimulator10.0
 # xcode_project: Loop.xcodeproj
 # xcode_scheme: Loop

Cartfile

@@ -1,4 +1,4 @@
-github "LoopKit/LoopKit" ~> 1.2.0
+github "LoopKit/LoopKit" == 1.2.0
 github "LoopKit/xDripG5" ~> 0.8.0
 github "bharat/SwiftCharts" "0.5.1-extension-api-safe"
 github "mddub/dexcom-share-client-swift" ~> 0.2.0

Cartfile.resolved

@@ -1,7 +1,7 @@
-github "amplitude/Amplitude-iOS" "v3.14.1"
-github "mddub/G4ShareSpy" "v0.3.1"
 github "LoopKit/LoopKit" "v1.2.0"
+github "LoopKit/xDripG5" "v0.8.0"
+github "amplitude/Amplitude-iOS" "v3.14.1"
 github "bharat/SwiftCharts" "0.5.1-extension-api-safe"
+github "mddub/G4ShareSpy" "v0.3.1"
 github "mddub/dexcom-share-client-swift" "v0.2.0"
 github "ps2/rileylink_ios" "v1.0"
-github "LoopKit/xDripG5" "v0.8.0"