Graphics.Vty.Platform.Unix.Input.Loop

The input layer used to be a single function that correctly accounted for the non-threaded runtime by emulating the terminal VMIN adn VTIME handling. This has been removed and replace with a more straightforward parser. The non-threaded runtime is no longer supported.

This is an example of an algorithm where code coverage could be high, even 100%, but the behavior is still under tested. I should collect more of these examples...

reference: http://www.unixwiz.net/techtips/termios-vmin-vtime.html