Update travis config

Author: Jann Roder

.travis.yml

@@ -1,26 +1,16 @@
 language: csharp
-
 sudo: required
-
-os: linux
-
-dist: trusty
+dist: xenial
 
 branches:
   except:
   - /^[0-9]/
 
-dotnet: 2.1.4
+dotnet: 3.1
 mono: none
-
-addons:
-  apt:
-    sources:
-    - sourceline: 'deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-ubuntu-trusty-prod trusty main'
-      key_url: 'https://packages.microsoft.com/keys/microsoft.asc'
-    packages:
-    - dotnet-hostfxr-1.0.1
-    - dotnet-sharedframework-microsoft.netcore.app-1.1.6
+  
+install:
+  - dotnet restore
 
 script:
   - (git fetch --unshallow 2>/dev/null || echo "Already full repo.")
@@ -29,4 +19,4 @@ script:
 notifications:
   on_success: always
   on_failure: always
-  on_start: always
+  on_start: always

README.md

@@ -43,7 +43,7 @@ These can be found in the [USAGE](USAGE.md) file.
 The following platforms are supported:
 
 - .NET Core
-- .NET 4.5.1
+- .NET 4.6.2
 
 ## Installation
 
@@ -52,7 +52,7 @@ library.
 
 ## Building
 
-Currently version `1.0` of the [.NET Core build tools](https://docs.microsoft.com/en-us/dotnet/articles/core/tools/) is required to build the source code.
+Currently version `2.0` of the [.NET Core build tools](https://docs.microsoft.com/en-us/dotnet/articles/core/tools/) is required to build the source code.
 To build from Visual Studio you'll need VS 2017.
 
 Assuming you have the .NET Core build tools installed, building the library from the command-line just involves:

build.sh

@@ -21,13 +21,11 @@ dotnet clean
 echo
 
 echo "Building ..."
-dotnet build ./Winton.Extensions.Threading.Actor/Winton.Extensions.Threading.Actor.csproj --configuration Release --framework netstandard1.3
 dotnet build ./Winton.Extensions.Threading.Actor/Winton.Extensions.Threading.Actor.csproj --configuration Release --framework netstandard2.0
 echo
 
 echo "Testing ..."
-dotnet test ./Winton.Extensions.Threading.Actor.Tests.Unit/Winton.Extensions.Threading.Actor.Tests.Unit.csproj --configuration Release --framework netcoreapp2.0
-dotnet test ./Winton.Extensions.Threading.Actor.Tests.Unit/Winton.Extensions.Threading.Actor.Tests.Unit.csproj --configuration Release --framework netcoreapp1.1
+dotnet test ./Winton.Extensions.Threading.Actor.Tests.Unit/Winton.Extensions.Threading.Actor.Tests.Unit.csproj --configuration Release --framework netcoreapp3.1
 echo
 
 if [ "${TRAVIS:-}" != "true" ]; then