- get_wm: Fixes non-EWMH WM detection on OpenBSD by introducing a
  ps_flags array the same way we do for disks. Tested successfully on
  Debian GNU/Linux (this change impacts all OSes).

- get_wm: Adds fvwm support

- get_model: Adds vmm(4) (OpenBSD's KVM counterpart) support

- get_disk: On OpenBSD you can't use df against a /dev/... unless being
root or in the 'operator' group. A separate disks array creation using
awk has been introduced only for this OS.

In case user has a custom-installed binary, prioritise it first before
using system-supplied binaries.

I noticed this when I'm testing with -v enabled. Looks like the trim
function replaces any spaces with a space.

This fixes the problem where terminal program cannot be displayed
because of an additional space in PPID variable.

Fix cannot correctly get window size

fix arch_small logo

add term-font support for yakuake

Add support for Nix packages on macOS

Fix borked version display for mksh

`"$SHELL" -c "printf %s \$KSH_VERSION"` as part of the shell version
detection for ksh and mksh was expanding to `printf %s $KSH_VERSION`
inside of shell. This resulted in `$KSH_VERSION` being substituted as
multiple arguments to printf. While (afaik) unspecified, mksh, bash
and zsh resort to repeating the format strings. This resulted in all
spaces missing from `$shell`, which in turn caused the string cleanup
to fail: `Shell: mksh @MIRBSDKSHR562017/08/29`

Quoting `$KSH_VERSION` causes it to be given to printf as a single
argument, which preserves its spaces. The output after this change
looks like follows: `Shell: mksh R56 2017/08/29`

battery/OpenBSD: improved charge%, adds status

This commit adds support for hw.sensors.acpibat0.amphour[03] for battery
charge statistics in addition to watthour[03]. It also adds charging status.

A bug caused by not correctly unset IFS to read array

Update neofetch

Fix #1039

OS: add januslinux