github_issues_url should be set in conf.py

[mwcraig]

astropy-helpers expects this variable to be set if there is a changelog for which links to github issues are automatically being generated when the documentation is built. See https://github.com/astropy/astropy/blob/master/docs/conf.py#L187 for the locationof this line in astropy.

Will do a PR to fix later this week unless someone else gets to it first.

[astrofrog]

I wonder whether we should be using the github project variable from setup.cfg to avoid having to define the same thing twice?

[astrofrog]

This is not so much irrelevant as already solved in prior PRs:

package-template/{{ cookiecutter.package_name }}/docs/conf.py

Line 170 in 999de51

github_issues_url = 'https://github.com/{0}/issues/'.format(setup_cfg['github_project'])