Yet, we included the copyright text from the respective file. With the
change to the machine-readable format we cannot parse it as part of the
manpage template anymore.
I therefore put in the old copyright text verbatim into the template.

Tell about using real dice with more than 6 faces.

Begin with some very plain usage samples.

Avoid to write down a certain path, as that could block reproducible
builds.

in man page.

We will have another release soon. So, let's care for details better to
soon than too late.

We showed an outdated list of available wordlists before.

`sphinx` can generate not only HTML docs but also man pages. Let's see
how far we can go to replace the more or less manually crafted man page
we provide currently.

And remove unneccessary whitespace.

We should be able to generate a more accurate man page for `diceware`.
with `docutils` and `rst2man` we can create a nice looking man page with
proper styles set.

Yet, we onlyy provide first parts of the man page template.

Make Sphinx stop complaining and fix indents.