<add> Concurrent/TChan.hs : Transformer Channel, copied from https://en.wikibooks.org/wiki/Haskell/Concurrency and maybe used later.
<imp> moved bulk init. to initController: _
<imp> renamed Gtk/Main.hs to Gtk/Packing.hs : _
<imp> Concurrent/Print.hs renamed to Concurrent/Chan.hs