The Errors type is no longer used by the CLI itself, and this custom
"multi-error" implementation had both limitations (empty list not being
`nil`), as well as formatting not being great. All of this making it not
something to recommend, and better handled with Go's stdlib.
As far as I could find, there's no external consumers of this, but let's
deprecate first, and remove in the next release.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
d3bafa5f3e