Added iterators to get lines from the feeder.
Removed use of deprecated functions in bars.
Removed use of deprecated functions in events.
Added a way to iterate backward through feeder iterators.
curses now use the feeder iterators.
Fixed bugs in feeder iterator use.
Removed deprecated feeder functions.
Fixed a bug in curses.
Fixed a printing bug in curses.
Fixed a bug in scrolling the list in curses.
Fixed bugs when changing the feed in curses.
Fixed a bug in the end command.