2 changes:
- Toggle nav-as-you-type with left single/double click below last entry
- Handle mouse events when filter is on

Visit parent is now left single click outside context nums on top row.

This is limited to libncurses support of full mouse scrolling.
Ref: https://invisible-island.net/ncurses/man/curs_mouse.3x.html#h3-Mouse-events

Find a parent when CWD disappears

incase the user just lost access, it would be better to remember the
selected directory to keep it highlighted.

The previous behaviour would exit nnn when the CWD disappeared.

Add forgotten export for quitcd scripts

Fix quitcd snippets for 'zsh' and 'bash'

This reverts commit afdfcecb9c.

Small ringtone plugin fixes

Remove unneeded check from checksum plugin

Add shuffle to mocplay

Remove duplicate code (#295)

These three lines are exact copy of 4555-4557.
As opener is not changed in between, we can delete these

Set CP in Makefile

$(CP) is not set by GNU Make
Seems like [1] is a full list of what GNU Make defines implicitly
[1] https://www.gnu.org/software/make/manual/html_node/Implicit-Variables.html