Log Message:
sysutils/hexyl: update to 0.12.0

Features
 - Only show one panel by default if the terminal width is not wide enough for
   two panels, see #182 (@sharkdp)
 - Respect the NO_COLOR environment variable, see #179 (@sharifhsn)

Bugfixes
 - Do not fail with an error if --panels=auto is used and the output is piped,
   see #184 (@sharkdp)

Changes
 - Breaking: For xxd-compatibility reasons, --group_bytes has been renamed
   to --group-size (with an --groupsize alias), see #121 (@sharkdp)

hexyl as a library
 - Breaking: num_group_bytes has been renamed to group_size.