Signal is testing public usernames: "Public Username Testing (Staging Environment)"

>[Public Username Testing (Staging Environment)](https://community.signalusers.org/t/public-username-testing-staging-environment/56866)
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>If you’ve been following along with the commit messages across our repositories, it’s no secret that we’ve been working on bringing Usernames to Signal for a while now. After rounds of internal testing, we have hit the point where we think the community that powers these forums can help us test even further before public launch.
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>To do so, we’d first like to invite you to test in Staging. Think of The Staging …

commit commit messages community forums internal launch messages point privacy public repositories secret signal test testing usernames working