Changes in version 1.12:

The zutils configuration file 'zutilsrc' has been renamed to 'zutils.conf'.
Zutils now looks for the configuration file in $XDG_CONFIG_HOME/zutils.conf
instead of $HOME/.zutilsrc. (XDG_CONFIG_HOME defaults to $HOME/.config).
(Suggested by Adam Tuja).

In zcat, zcmp, zdiff, and zgrep, the option '-O, --force-format' now can
force also "uncompressed" format.

zcmp now accepts the option '-H, --hexadecimal' to print byte values in
hexadecimal instead of octal.

In zcmp:
  The long name of option '-s' has been changed to '--script' following a
  similar change made to GNU ed.

  The short name '-q' has been assigned to options '--quiet' and '--silent'.

  Option '-q' now only suppresses diagnostic messages written to stderr.

  Option '-s' now only suppresses messages about file differences written to
  stdout or stderr.

  Option '-l, --list' is now different from option '-v, --verbose', which
  now undoes the effect of '--quiet'.

zcmp now prints byte and line in EOF message like GNU cmp:
"zcmp: EOF on FILE after byte B, in line L".

zgrep now also accepts the following options: '-G, --basic-regexp',
'--label=<label>', '--line-buffered', '-P, --perl-regexp', '--silent',
'-T, --initial-tab', '-U, --binary', and '-Z, --null'.
(Reported by Chris Jamboretz and Leah Neukirchen).

ztest now exits with status 2 if an uncompressed file has a compressed file
name extension, or if a compressed file has a wrong compressed extension.

zupdate now accepts option '-d, --destdir' to write recompressed files to
another directory. This allows, for example, recompressing files from a
read-only file system to another place without needing to copy or link them
to the destination directory first.

zupdate now accepts option '-e, --expand-extensions', which makes it expand
combined file name extensions; tgz --> tar.lz.

zupdate now also accepts option '-i, --ignore-errors', which makes it ignore
non-fatal errors. (Suggested by Antoni Sawicki).

All utilities now support compress'd (.Z) files through gzip. For this to
work, the gzip program used (for example GNU gzip) must be able to
decompress .Z files.

At verbosity level 1 (2 for zdiff and zgrep) or higher, '-V, --version' now
prints the versions of the compressors used (limited by option '-M, --format').
(The compressors used must support option '-V' for this to work).

Diagnostics caused by invalid arguments to command line options now show the
argument and the name of the option.

It has been documented in the manual that the data format is detected by its
magic bytes, not by the file name extension.

The testsuite now tests tarlz (if available) as compressor for zupdate.