Enhancements:
* Add the `globus whoami --linked-identities` flag to get all of your linked identities
(https://github.com/globus/globus-cli/pull/295[295])
* Add the `--format UNIX` flag to produce output suitable for line-oriented
processing with typical unix tools
(https://github.com/globus/globus-cli/pull/404[404])
* Documentation and minor internal improvements
Bugfixes:
* Fix `globus bookmark list` rendering of deleted endpoints
(https://github.com/globus/globus-cli/pull/406[406])