User accounts are unable to edit identity names or create new identities.
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Identities
Haha, whoops! I'll get the "Create Identity" button added back in tonight
This will be fixed in ~5 minutes. Go to your Profile, hit "Switch Identities", then you'll see a green button for creating a new Identity.
No editability of Names yet. Your Name is turned into your identity URL and I have to account for old name redirects, so that'll take a little longer.