Cross target to netcoreapp3.1 (LTS)

Author: tebeco

global.json

@@ -1,5 +1,5 @@
 {
   "sdk": {
-    "version": "3.0.100"
+    "version": "3.1.101"
   }
 }

src/Serilog.AspNetCore/Serilog.AspNetCore.csproj

@@ -4,7 +4,7 @@
     <Description>Serilog support for ASP.NET Core logging</Description>
     <VersionPrefix>3.2.1</VersionPrefix>
     <Authors>Microsoft;Serilog Contributors</Authors>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netcoreapp3.1</TargetFrameworks>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <AssemblyOriginatorKeyFile>../../assets/Serilog.snk</AssemblyOriginatorKeyFile>
@@ -28,9 +28,18 @@
     <PackageReference Include="Serilog.Sinks.Debug" Version="1.0.1" />
     <PackageReference Include="Serilog.Settings.Configuration" Version="3.1.0" />
     <PackageReference Include="Serilog.Formatting.Compact" Version="1.0.0" />
-    <PackageReference Include="Microsoft.AspNetCore.Hosting.Abstractions" Version="2.0.0" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Logging" Version="2.0.0" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+    <PackageReference Include="Microsoft.AspNetCore.Hosting.Abstractions" Version="2.1.*" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.1.*" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="2.1.*" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.*" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="3.1.*" />
   </ItemGroup>
 
 </Project>