Description of changes: Add update command and unit tests. Splitting this smaller unit of work from the larger PR #11 (which also includes the serve command).
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Issue #, if available: RolesAnywhere-3787
Description of changes: Add update command and unit tests. Splitting this smaller unit of work from the larger PR #11 (which also includes the serve command).
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.