Email verification and change flows (#1560)
* fix 'Reposted by' text overflow
* Add email verification flow
* Implement change email flow
* Add verify email reminder on load
* Bump @atproto/api@0.6.20
* Trim the inputs
* Accessibility fixes
* Fix typo
* Fix: include the day in the sharding check
* Update auto behaviors
* Update yarn.lock
* Temporary error message
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Co-authored-by: Eric Bailey <git@esb.lol>
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