Add the ability to not display Usage in case of errors not related to parameters

[dvilker]

Is your feature request related to a problem? Please describe.
For example, now, when I run changie batch auto, if there are no changes, I get:

Error: no unreleased changes found for automatic bumping
Usage:
  changie batch version|major|minor|patch|auto [flags]

Flags:
  -d, --dry-run              Print batched changes instead of writing to disk, does not delete fragments
      --footer-path string   Path to version footer file in unreleased directory
  -f, --force                Force a new version file even if one already exists
      --header-path string   Path to version header file in unreleased directory
  -h, --help                 help for batch
  -i, --include strings      Include extra directories to search for change files, relative to change directory
  -k, --keep                 Keep change fragments instead of deleting them
  -m, --metadata strings     Metadata values to append to version
      --move-dir string      Path to move unreleased changes
  -p, --prerelease strings   Prerelease values to append to version
  -j, --project string       Specify which project version we are batching
      --remove-prereleases   Remove existing prerelease versions

no unreleased changes found for automatic bumping

What's confusing is that it seems like the parameters are set incorrectly, not that there is a state error.

Describe the solution you'd like
Either remove Usage altogether in this case, or remove it if some parameter is present (--do-not-show-usage).

Describe alternatives you've considered
&2>/dev/null, but this looks strange, because another text error should also be sent to stderr (in stdout now).

[miniscruff]

Looks like
https://github.com/spf13/cobra/blob/09d5664f34e3f7571560e48ccb74c8904b671e87/command.go#L234-L235
is what we should enable for this. I think its fair as I always do find this strange.