Enhancements:
* All commands now support a `--quiet` option which minimizes verbosity. For
most commands, this option will not change the default output, but
it will counteract the `-v/--verbose` option.
* Completion support has been added for inputs which are JSON strings or files.
These will autocomplete to filenames when possible, for users leveraging tab
completion.
* When `globus login` is run with the `--quiet` flag, it will print no output
if you are already logged in.
* `globus gcs collection list` can now return results in excess of the GCS default
page size; control over the number of results returned is available
via the `--limit` option.
Other:
* All support for Delegate Proxy Activation has been removed. This change
is part of removal of GCSv4 Activation Support. Users should not experience
any impact, as there are no longer any valid usages for Delegate Proxy
Activation.