* Use client logger for sync
Use the logger attached to the MatrixClient when writing log messages out of
the sync api. This helps figure out what's going on when multiple clients are
running in the same JS environment.
* Use client logger for to-device message queue
* Use client logger in `PushProcessor.rewriteDefaultRules`
* use client logger in `ServerCapabilities`
* Mark global `logger` as deprecated
* Fetch capabilities in the background
& keep them up to date
* Add missed await
* Replace some more runAllTimers
and round down the wait time for sanity
* Remove double comment
* Typo
* Add a method back that will fetch capabilities if they're not already there
* Add tests
* Catch exception here too
* Add test for room version code
