* New upstream release. * Change documentation build system to sphinx in line with new upstream docs. * Rebuild lfs files as part of build process. * Refresh patchs for new version: - drop manual-latex-define.patch no longer needed with sphinx. - drop siteconfig-static.patch: not needed with new build system - drop pyx-text-warnings26.patch: warnings fixed upstream * Add patch sphinx-mathjax.patch to use pngmath in sphinx rather than mathjax which is not yet in Debian. * Add patch createlfs-no-foiltex.patch to skip generation of foiltex-based lfs files that would require non-free components. * Switch to dpkg-source 3.0 (quilt) format. * Switch from python-support to dh_python2 as build helper. * Update copyright format to newer DEP-5 specification. * Add new files to copyright file. * Bump standards version to 3.9.2 (no changes required). * Set DM-Upload-Allowed: yes