Increment version to 1.3.0
Follow man-pages guidelines more closely
Add option to allow writing to all hotplug devices
Make sync dependency optional
Remove built-in extended usage message

The manpage is the correct place for this kind of information.
Increment version to 1.2.0
Simplify block device detection code
Refuse to write to mounted devices

This is an extra test to avoid writing to the wrong device.
Add SEE ALSO manpage section
Update the program help to match
Follow manpage guidelines better
Remove trailing dots from manpage

It's now easier to select the URL/email address.
Update the help message

Make it the same as the manpage.
Increment version to v1.1.1
Add option to show the program version