Move CI to Github Actions

[nicoweidner]

Currently, Appveyor is broken, and supposedly it is not the first time that it's unstable.
Many people consider Github Actions a better CI solution than CircleCI.

For these two reasons, I'd suggest to move all CI checks to Github Actions. It seems to support runners for Linux, MacOS and Windows: https://github.com/actions/runner-images

[nicoweidner]

It appears that the Appveyor checks may have been tied to @sschuberth's Appveyor account, which was recently deleted. So there is a high chance that those checks are now permanently broken.
@goneall Can you remove them completely? (if that hasn't happened already)

[nicoweidner]

@licquia @pombredanne Thoughts on the move?

[sschuberth]

It appears that the Appveyor checks may have been tied to @sschuberth's Appveyor account, which was recently deleted.

Indeed, sorry for that 😞 @maxhbr just pinged me on the breakage.

So there is a high chance that those checks are now permanently broken.

They should be gone now. They are no more required checks, and I just deleted the dangling webhook from this repo's settings.

👍 for moving to GitHub actions (for all platforms).

[maxhbr]

No problem @sschuberth, thanks for initially setting it up and getting it to run. Your contributions are very valued!

[nicoweidner]

They should be gone now. They are no more required checks, and I just deleted the dangling webhook from this repo's settings.

Cool, thanks for removing them! We will take this as extra incentive to move to Github Actions quickly 😅

[sschuberth]

👍 for moving to GitHub actions (for all platforms).

Maybe this could help here: https://github.com/actions/importer-issue-ops

[armintaenzertng]

fixed by #410