* Added padding for numbers in .nmv

* Add skim as an option in fzopen

* Remove unnecessary eval

Thanks @leovilok!

Co-Authored-By: lvgx <l@vgx.fr>

* Added note about whitespace

Co-authored-by: lvgx <l@vgx.fr>

* Add nvim as a diff tool for getplugs plugin

* Comment out `is_cmd_exists()`

* Add nvim diff tool for diffs plugin

* Add $EDITOR to nuke plugin for editing/reading text file format

* Modify diff command to fix CircleCI failures

* Fix getplugs prompt

* Allow nuke to use custom $PAGER

Co-authored-by: Todd Yamakawa <todd.yamakawa@arm.com>

See https://kristaps.bsd.lv/lowdown/

* Unvectorize xstrlcpy

On all libcs I could find, memcpy does a better job than we can.

* Rename xstrlcpy to xstrsncpy to avoid confusion

The semantics of our xstrlcpy differed slightly from strlcpy; we return
the number of copied characters; strlcpy returns the strlen(src).
strscpy from Linux is similar except it returns the number of copied
characters sans the NUL byte, so this is named strsncpy to be different.