Previously this wasn't the case, as the type could be inferred by the
type of the parent-vector to extend.
Apparently this feature was removed, probably for good reason.
We are now able to decode detailed errors and pass them on. This allows
the CLI to provide more useful error responses.
Additionally, the CLI will only print debug responses in --debug mode.
Fixes#82
That way, changes can be tracked.
Also, we make it official.
Future checkins will only be made if major changes were done,
similar to how the APIs are handled.
Related to #64