ls: List all the users who have access to modify a package and push new
versions. Handy when you need to know who to bug for help.
add: Add a new user as a maintainer of a package. This user is enabled
to modify metadata, publish new versions, and add other owners.
rm: Remove a user from the package owner list. This immediately revokes
their privileges.
Note that there is only one level of access. Either you can modify a package,
or you can't. Future versions may contain more fine-grained access levels, but
that is not implemented at this time.
If you have two-factor authentication enabled with auth-and-writes (see
npm-profile) then you'll need to include an otp
on the command line when changing ownership with --otp.