Bug#870688: sagemath: new upstream release 8.0

[Andreas Beckmann]

Package: sagemath
Version: 7.6-3
Severity: serious
User: debian-qa at lists.debian.org
Usertags: piuparts

Hi,

during a test with piuparts I noticed your package is no longer
installable in sid:

sagemath depends on python-cysignals-pari, but the new
python-cysignals-pari in sid has
  Breaks: sagemath (<< 8.0~)


Cheers,

Andreas