fix mouse events for overlapping elements.
more efficient content scrolling.
comments.
add workaround for screen-256color terminfo. use correct terminfo fallback.
fix progressbar.
better screen and parent handling. scroll improvements.
automatically use alternate buffer etc.
add text input and setContent.
refactor progressbar. horizontal scroll for textbox.
cleanup old textbox code.
fix textbox focusing.
global element events. automatically focus on click.
add focus history.
better content parsing and scrolling.
cleanup recent scroll work. fix max.
add test content.