* go mod tidy
* Break complement to check it fails CI
* Remove partitioned stream positions
This was used by the device list stream position. The device list position
now corresponds to the `Offset`, and the partition is always 0, in prep
for removing reliance on Kafka topics for device list changes.
* Linting
* Migrate old style tokens to new style because element-web doesn't soft-logoout on 4xx errors on /sync
* Recheck device lists when join/leave events come in
* Add PerformDeviceDeletion
* Notify clients when devices are deleted
* Unbreak things
* Remove debug logging
* Persist partition|offset|user_id in the keyserver
Required for a query API which will be used by the syncapi which
will be called when a `/sync` request comes in which will return
a list of user IDs of people who have changed their device keys
between two tokens.
* Add tests and fix maxOffset bug
* s/offset/log_offset/g because 'offset' is a reserved word in postgres
* Produce kafka events when keys are added
* Consume key changes in syncapi with TODO markers for handling them and catching up
* unbreak tests
* Linting
