TODO user-images-extract-to-table:
User profile images and banner images => extract to table.  Add `is_downloaded` column.  Add test for double-downloading a user, shouldn't change the write-times on these files

TODO update-all

TODO delete users.txt, users.yaml

TODO fetch-older-tweets:
get tweets older than 3200 ago



TODO broadcast-cards
panic: Unknown card type: 3691233323:periscope_broadcast
panic: Unknown card type: 745291183405076480:broadcast

TODO consecutive-tombstones
Conversation threads with two or more consecutive tombstones don't get scraped correctly
- e.g.: https://twitter.com/hatecoleslaw/status/1429584549701357568
- Hard mode: https://twitter.com/masforshort/status/1482000048447705090

Video size reduction:
- add "bitrate" and "available bitrates" fields
- option to upgrade or downgrade video quality

TODO tombstone updating:
- "Tweet is unavailable" tombstones are not always accurate.  In user feed, they show as "not available" but the real reason is "deleted" etc; should update the tombstone type when fetching the conversation view
- tweet-to-stub: If a tweet is deleted after getting a non-stub version, should still show a tombstone (or a modified one at least)
- stub-to-tweet: If a user un-privates after getting a stub-version (or tweet becomes available for other reasons), stub versions should write the real content and "stub" status should be removed
- "Account owner limits who can view these tweets" tombstone: https://twitter.com/michaelmalice/status/1479540552081326085

TODO https://twitter.com/michaelmalice/status/1461031030278742020 => tombstone should say "account no longer exists" but it says "Tweet is unavailable"

TODO: Problem tweets
- https://twitter.com/TyCardon/status/1480640777281839106: "Media has been disabled in response to report by copyright owner"
- https://twitter.com/CovfefeAnon/status/1427693931047837702: parent thread not loading (possible GUI problem)
- "account no longer exists" tombstone not being collected
- tweet with warning label not getting scraped right: https://twitter.com/michaelmalice/status/1493324611999748098

TODO: videos-view-count
- videos don't parse properly in APIv2

TODO: APIv2-pinned-tweets
- feed with pinned tweet

TODO video-not-downloading: https://twitter.com/JustinPulitzer/status/1496709662602932224

TODO sqlx
- https://github.com/jmoiron/sqlx