Changes in version 1.4:

The option "--format" has been renamed to "-O, --force-format".

Option "-M, --format=<list>" now excludes from automatic search the
formats not listed in the comma-separated <list>. This change introduces
a backward incompatibility with previous versions of zutils.

If the pattern begins with "-", zgrep now prepends "-e" before passing
it to grep. ('zgrep -- -pattern file' now works as expected).

The targets "install-compress", "install-strip-compress",
"install-info-compress" and "install-man-compress" have been added to
the Makefile.