Replace coverage report tool

[hakonanes]

Our coverage report tool, coverage.io, has been down for more than a day: https://coveralls.io/.

I suggest we switch to using Codecov. This site is used for example by HyperSpy and many others.

[argerlt]

If you want to change it, I'm down, especially if you think it will be pretty trivial.

As an alternative suggestion though: what if we just change the workflow so failing to upload doesn't cause the test itself to fail?

[hakonanes]

I hope it'll be trivial. Just need to read up on Codecov's documentation.

I know I haven't been able to help as much as I should, lately... But, I prefer stuff to fail explicitly, rather than silently. I'd keep it failing until we find a replacement.

[hakonanes]

coveralls.io is back, which is great! But I think we should migrate regardless, as this has happened before, with some annoyance.

[argerlt]

I prefer stuff to fail explicitly, rather than silently. I'd keep it failing until we find a replacement.

That's fair. My thought was this was coveralls failing, not ORIX, but i suppose either way its a problem that needs diagnosing.

I'm still down. alignment with sister programs is always nice.