Update to Cake 0.35.0 and .NET Core SDK 3.0.100

Author: devlead

.travis.yml

@@ -13,12 +13,12 @@ osx_image: xcode9.2
 mono:
   - 4.4.2
 
-dotnet: 2.1.3
+dotnet: 3.0.100
 
 before_install:
   - git fetch --unshallow # Travis always does a shallow clone, but GitVersion needs the full history including branches and tags
   - git config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
-  - git fetch origin  
+  - git fetch origin
 
 script:
   - ./build.sh --target=Test

build.config

@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
-CAKE_VERSION=0.34.1
-DOTNET_VERSION=3.0.100-rc1-014190
+CAKE_VERSION=0.35.0
+DOTNET_VERSION=3.0.100

global.json

@@ -3,6 +3,6 @@
         "src"
     ],
     "sdk": {
-        "version": "3.0.100-rc1-014190"
+        "version": "3.0.100"
     }
 }