Add .NET8-specific forget Task implementation

We can now rely on the built-in behavior in .NET8 to avoid throwing unobserved exceptions.

We also remove the public API analyzers which aren't really adding any value, personally.

Author: kzu

src/Merq.Tests/Merq.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;net472</TargetFrameworks>
+    <TargetFrameworks>net8.0;net472</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
     <!-- Since we have our own version of the attribute in Merq.Sample -->

src/Merq/Merq.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
     <PackageId>Merq</PackageId>
     <LangVersion>Latest</LangVersion>
     <Title>
@@ -17,7 +17,6 @@
   <ItemGroup>
     <PackageReference Include="NuGetizer" />
     <PackageReference Include="Microsoft.CSharp" />
-    <PackageReference Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Pack="false" PrivateAssets="all" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Condition="$(TargetFramework) == 'netstandard2.0'" />
   </ItemGroup>
 
@@ -34,9 +33,4 @@
     <InternalsVisibleTo Include="Merq.Tests" />
   </ItemGroup>
 
-  <ItemGroup>
-    <AdditionalFiles Include="PublicAPI/$(TargetFramework)/PublicAPI.Shipped.txt" Condition="Exists('PublicAPI/$(TargetFramework)/PublicAPI.Shipped.txt')" />
-    <AdditionalFiles Include="PublicAPI/$(TargetFramework)/PublicAPI.Unshipped.txt" Condition="Exists('PublicAPI/$(TargetFramework)/PublicAPI.Unshipped.txt')" />
-  </ItemGroup>
-
 </Project>

src/Merq/PublicAPI.Shipped.txt

@@ -26,6 +26,9 @@ public static void Forget(this Task task)
         // More info about the state machine: https://blogs.msdn.microsoft.com/seteplia/2017/11/30/dissecting-the-async-methods-in-c/?WT.mc_id=DT-MVP-5003978
         async static Task ForgetAwaited(Task task)
         {
+#if NET8_0_OR_GREATER
+            await task.ConfigureAwait(ConfigureAwaitOptions.SuppressThrowing);
+#else
             try
             {
                 // No need to resume on the original SynchronizationContext, so use ConfigureAwait(false)
@@ -35,6 +38,7 @@ async static Task ForgetAwaited(Task task)
             {
                 // Nothing to do here
             }
+#endif
         }
     }
 }