That's what the help messages say.
Previously it would only set '--skip-download', which would write thumbnail,
descriptions or subtitles if they were requested (for example you may have set
'--write-thumbnail' in the config file).
Modified motherless regular expression.
Previously it matched only URLs like this:
motherless.com/ID
Now it also matches this:
motherless.com/g/group_name/ID
All tests including the newly added one passed.