v5.0.0
- Clean up various imports primarily so that imports of packages that aren't in the standard library are all in one section.
- Update to major version v5
- return resp error message
- copy.Image(): select the CopySystemImage image using the source context
- Add manifest list support
- docker: handle http 429 status codes
- allow for .dockercfg files to reside in non-home directories
- Use the correct module path in (make test-skopeo)