Updated to MonoGame 3.7 (#87)

Author: flyingpie

src/ImGui.NET.SampleProgram.XNA/ImGui.NET.SampleProgram.XNA.csproj

@@ -20,7 +20,7 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.6.0.1625" />
+      <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.7.0.1708" />
     </ItemGroup>
 
 </Project>

src/ImGui.NET.SampleProgram.XNA/Program.cs

@@ -4,7 +4,7 @@ public static class Program
     {
         public static void Main(string[] args)
         {
-            new SampleGame().Run();
+            using (var game = new SampleGame()) game.Run();
         }
     }
 }