Revert "home: debounce last notified"
This is technically incorrect, as debouncing can prevent saving
important events.
The proper way to do this is to save it locally in memory, and then
debouncing the saving itself. Will do this soon.
Reverts: a9b4cfd424
Fixes: https://github.com/damus-io/damus/issues/1439
Changelog-Fixed: Fixed old notifications always appearing on first start
This is a refactor of the codebase to use a more memory-efficient
representation of notes. It should also be much faster at decoding since
we're using a custom C json parser now.
Changelog-Changed: Improved memory usage and performance when processing events
