grr-cli-0.3.0 is not a library.
grr — Google tools from the terminal, at maximum performance.
One binary, one login, every service: commands are namespaced by
service (grr gmail ..., grr calendar ..., grr drive ...,
grr contacts ..., grr chat ..., grr forms ...). Account-level
concerns (auth, transport, schema) stay top-level. Each service client
is built lazily in its dispatch arm so running one service never
probes another's endpoints.