Updated language version.

Oren (electricessence) · Oren (electricessence) · commit bb6925f347d5 · 2018-05-07T23:33:43.000-07:00
diff --git a/Open.Collections.Numeric.csproj b/Open.Collections.Numeric.csproj
@@ -25,6 +25,10 @@ Part of the "Open" set of libraries.</Description>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
+    <LangVersion>latest</LangVersion>
+  </PropertyGroup>
+
   <ItemGroup>
     <None Remove=".git" />
     <None Remove=".gitignore" />
