Add history URL to project metadata

[scop]

Background info at
pypi/warehouse#7882 (comment)

[takluyver]

Thanks!

[takluyver]

I belatedly noticed that history wasn't one of the options you added in your Warehouse PR. Do you want to make another PR here to change the name to changelog or something?

[scop]

I have another warehouse PR pending for that: pypi/warehouse#7896

In any case, I think the link should match the title of the thing it links to, so in that sense I think it's fine as is. But personally I'd use "Changelog" or "Change log" (IIRC the former is more common) in both the link and the doc if I was starting a project, not sure if it's worth tweaking once it's out like it is in this case (there's also the history.html filename to consider, so... meh).

[scop]

Note BTW that currently History as the title will work just fine too, warehouse will just show the readthedocs icon for it until the mentioned PR is merged.

[takluyver]

OK, thanks.