arm64 binary

[vielmetti]

dog builds just fine on my arm64 machine (once I give it a suitably up-to-date version of rustc). Any chance of distributing an arm64 binary?

I think it might be simple as adding an arch matrix to the Travis builds.

[cpressland]

Could I second this and also request a darwin/arm64 build?

[cocoonkid]

This would be grea!

[azlux]

I've add the armhf build into my repo if needed until the CI/CD to it automatically.