This is to merge various fixes, in particular ones from Debian, and prepare for Python 3.

propose eventual patches on the package github repo
https://github.com/sagemath/sagetex

Tarball: https://github.com/sagemath/sagetex/releases/download/3.2/sagetex-3.2.tar.gz

Upstream: Fixed upstream, in a later stable release.

Component: packages: standard

Keywords: sagetex

Author: Dima Pasechnik

Branch/Commit: e4d70cc

Reviewer: François Bissey, Karl-Dieter Crisman

Issue created by migration from https://trac.sagemath.org/ticket/27024