debian: New upstream version 0.0.20200601

To be uploaded to d.m.o using:

uscan --download -dd && debuild -S && debuild && debsign && \
debrelease --dput mentors

Bug: https://github.com/rzr/pinball-table-gnu/issues/3
Bug-Debian: https://bugs.debian.net/961930


Signed-off-by: Philippe Coval <rzr@users.sf.net>
Change-Id: I52a933fc39c5ccf02095a329f3a3240923ec30cd