This fixes build errors in various python-foo-doc packages. - Add new latex dependencies needed in openSUSE:Factory - Check that latex dependencies are installable OBS-URL: https://build.opensuse.org/request/show/518572 OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-Sphinx?expand=0&rev=87
- Split documentation into subpackage to avoid dependency loops. - Only require python3-typing for python3 < 3.5 OBS-URL: https://build.opensuse.org/request/show/512790 OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-Sphinx?expand=0&rev=85