Backlog
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+- [ ] Background polling and incremental timeline updates.
+ We can mark which messages have already been printed and print new ones as
+ they come in.
+ REQUIRES: polling
+- [ ] Use ETag to prevent redundant downloads
+- [ ] Polling mode/command, where tt periodically polls peer timelines
- [ ] nick tiebreaker(s)
- [ ] some sort of a hash of URI?
- [ ] angry-purple-tiger kind if thingie?