thefiddler/opentk — pull request #8 by thefiddler (2014-02-17 22:33:58+00:00)
Title: Add modifier keys to KeyboardKeyEventArgs

This makes keyboard handling more straightforward:
```csharp
var gw = new GameWindow();
gw.KeyDown += (sender, e) =>
{
if (e.Key == Key.Enter && e.Alt)
gw.WindowState = WindowState.Fullscreen;
};
```