keystroke recorder

clean-up: #51

today a very simple piece of code that takes whatever you're typing in a document and posts it back 2 seconds later. see it as a demonstration. the list is treated as a fifo buffer.
note: only works in supercollider versions with Document support (not 3.6, but 3.4, 3.5, 3.7)

var delay= 2; //post 2 seconds later
var l=;

//--record in list l
Document.current.keyDownAction= {|doc, key|
                (key: key, time: Main.elapsedTime)

//--playback of list l
                var now= Main.elapsedTime;
                if(l.size>0 and:{now-delay>l.last.time}, {