The following dependencies were updated:
* `criterion` from 0.3 to 0.4
* `deadpool-redis` from 0.10 to 0.11
* `normpath` from 0.3 to 1
* `cookie` from 0.16 to 0.17
This is the async analog of 'rocket_sync_db_pools', rewritten to be
cleaner, leaner, easier to maintain and extend, and better documented.
Resolves#1117.
Resolves#1187.