Turning on strict features

Author: jbogard

Directory.Build.props

@@ -1,7 +1,7 @@
 <Project>
   <PropertyGroup>
     <LangVersion>latest</LangVersion>
-    <NoWarn>$(NoWarn);1701;1702;1591</NoWarn>
+    <NoWarn>$(NoWarn);CS1701;CS1702;CS1591</NoWarn>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
   </PropertyGroup>
 </Project>

src/MediatR/MediatR.csproj

@@ -5,8 +5,9 @@
     <Description>Simple, unambitious mediator implementation in .NET</Description>
     <Copyright>Copyright Jimmy Bogard</Copyright>
     <TargetFrameworks>net461;netstandard2.0;netstandard2.1</TargetFrameworks>
-    <LangVersion>8</LangVersion>
+    <LangVersion>latest</LangVersion>
     <Nullable>enable</Nullable>
+    <Features>strict</Features>
     <AssemblyName>MediatR</AssemblyName>
     <PackageId>MediatR</PackageId>
     <PackageTags>mediator;request;response;queries;commands;notifications</PackageTags>