Merge pull request #4 from ProxyKit/netstandard

Target netstandard2.0 for broader compatibility.

Author: damianh

src/RoutingHandler/RoutingHandler.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <Description>An HttpMessageHandler that routes requests to nested handlers based on origin.</Description>
     <PackageId>ProxyKit.RoutingHandler</PackageId>
     <Authors>Damian Hickey</Authors>
@@ -39,4 +39,4 @@
   <ItemGroup>
     <None Include="icon.png" Pack="true" PackagePath=""/>
   </ItemGroup>
-</Project>
+</Project>