Update to Swift 4.1 and BlueSocket 1.0 (#64)

Author: ianpartridge

.swift-version

@@ -1 +1 @@
-4.0.3
+4.1

.travis.yml

@@ -5,18 +5,22 @@ branches:
     - develop
     - /^issue.*$/
 
-notifications:
-  slack:
-    secure: "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"
-
 matrix:
   include:
     - os: linux
       dist: trusty
       sudo: required
+    - os: linux
+      dist: trusty
+      sudo: required
+      env: SWIFT_SNAPSHOT=4.0.3
+    - os: osx
+      osx_image: xcode9.3
+      sudo: required
     - os: osx
       osx_image: xcode9.2
       sudo: required
+      env: SWIFT_SNAPSHOT=4.0.3
 
 before_install:
   - git clone https://github.com/IBM-Swift/Kitura-CI.git

Package.swift

@@ -30,7 +30,7 @@ let package = Package(
     dependencies: [
         // Dependencies declare other packages that this package depends on.
         // .package(url: /* package url */, from: "1.0.0"),
-        .package(url: "https://github.com/IBM-Swift/BlueSocket.git", from: "0.12.0")
+        .package(url: "https://github.com/IBM-Swift/BlueSocket.git", from: "1.0.0")
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target defines a module or a test suite.

README.md

@@ -29,7 +29,7 @@ KituraRedis is a Swift library for interacting with a Redis database using.
 It is dependent on the [BlueSocket](https://github.com/IBM-Swift/BlueSocket.git) module.
 
 ## Swift version
-The latest version of Kitura-redis requires **Swift 4.0.3**. You can download this version of the Swift binaries by following this [link](https://swift.org/download/). Compatibility with other Swift versions is not guaranteed.
+The latest version of Kitura-redis requires **Swift 4.0.3 or later**. You can download this version of the Swift binaries by following this [link](https://swift.org/download/). Compatibility with other Swift versions is not guaranteed.
 
 ## Build: