Also:
* You can now "scroll out" of the visual editor to
return to the main view. This should alleviate the
frustration of pressing up/down arrows thinking the
main view should move but, really, you're stuck in
the editor.
* The three-dot-ellipsis for hidden fields has been
replaced with a unicode vertical ellipsis so that
less space is taken up.
Files:
* filter_sub_source.cc: Fix some performance issues
* filter_sub_source.hh: The readline context should
be case-INsensitive for completions
* readline_curses.cc, session_data.cc: modernize