Added Volume.cs to Src/UnitsNet/UnitsNet.netcore45.csproj.

Author: angularsen

Src/UnitsNet/UnitsNet.netcore45.csproj

@@ -111,6 +111,7 @@
     <Compile Include="UnitValue.cs" />
     <Compile Include="Vector2.cs" />
     <Compile Include="Vector3.cs" />
+    <Compile Include="Volume.cs" />
   </ItemGroup>
   <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '11.0' ">
     <VisualStudioVersion>11.0</VisualStudioVersion>