Bugfixes:
* Accommodate copied-and-pasted API routes to the `globus api groups` command
that include the `/v2` route.
Enhancements:
* Added a new command for users to create GCSv5 Guest Collections.
+
[source]
----
globus collection create guest <mapped_collection_id> <root_path> <display_name>
----
* Introduce a new command, `globus gcs`, for GCSv5 Collection, Storage Gateway, and
User Credential management.
Other:
* The `globus timer create transfer` command now supports the latest
version of the Globus Timers API.