Fixes #743

* preview-tabbed will not exit with ^C

* preview-tabbed will not exit with ^C

This reverts commit 01455b3d3a.

* sxiv automatically plays animations (part2)

* Update imgview

* Update imgview

* Add nerdfont defs file and normalize vars

* some cleanup

* address feedback

* one more spacing issue

* address feedback

preview-tabbed now kills lingering viewer

* change version checks to `which` instead. add comments around imvr in linux

* add which checks for renamer and preview-tui as well

* Add jump plugin to nnn

* indents

* Readme for plugin

* add pipe check to autojump

* indents to 4

Merge plugins jump and autojump

* Add support for Alexey Tourbin's QSORT code

See https://github.com/svpv/qsort

* Add benchmark scripts and compilation mode

Compile with `make O_BENCHMARK=1`, and run benchmarks with e.g.:
  ./misc/test/benchmark.sh ./nnn '/' '/usr/bin' '/usr/lib' > benchdata
You can then plot basic violin graphs with:
  ./misc/test/plot-bench.py benchdata

* Update style, doc, haiku support, fix lint

* Haiku: Some small fixes to the recipe and resource file

Whoops...just some small fixes.

* Update nnn.rdef

Co-authored-by: Jana <engineerarun@gmail.com>

* nuke: use macOS open when GUI enabled

* nuke: use is_mac function to test for macOS

This is consistent with how the imgur plugin does detection.

* Add macOS open command to plugins

* pskill: only execute if input is non-empty