[h5md-user] author_email attribute

[Peter Colberg]

Hi all,

While revising the H5MD specification for publication, I made a minor
semantic change to the h5md group. Since commit 88b259c, author name
and email address are now stored in separate attributes "author" and
"author_email", where the latter remains optional.

The change was motivated by a collegue of mine, who remarked that the
format "Real Name <address@hidden>" could require string formatting,
which would be painful using Fortran. I agree with this assessment,
and wonder why I proposed that format in the first place…

Peter