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

* Add icons

* Fix build break

* Fix icon position in detailed mode

* Various fixes

* Provision for icon specific colors

No icons with oldcolor. Small optimizatons

* Update Makefiles

Small refinement for other matching

* Added support of most

* Only test if bat exists

* Faster this way

* Don't test for bat'

Fix arrow keys not working on mintty

An ESCDELAY of 0 can break long escape sequences, such as the arrow keys,
on slower terminals.

This reverts commit 2599564e64.

Haiku: General fixup, add icon, add rdef file

Fix inability to enter directories on an XFS filesystem on top of an md device

- Add a native vector icon for Haiku (it hasn't been Haiku-ified yet however)
- Add a rdef file (specifies application metadata)
- Add clipboard support, notififcation support, and basic nuke support
- Fix support for fortunes on Haiku ("-s" option is not available on Haiku)
- Cleanup Haiku recipe

This reverts commit 1fecdb2393.