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:
For each user in userslist.txt:
- update user
- download new images if necessary
- fetch tweets since last update

TODO implement-search

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


TODO https://twitter.com/michaelmalice/status/1461031030278742020 => "account no longer exists" tombstone

TODO cleanup-main: The `cmd/twitter/main.go` file is becoming a disaster, it needs a cleanup badly.  lots of copy-pastes that should be functions, code that should be moved to the scraper / persistence modules, etc

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