* refactor postgres upgrade function to use async
* add function wrapper for getting the elements of a sorted set to avoid postgres planning the query with a nested sequential scan
* fix fatal(?!) lint errors
* add missing await
* bump PostgreSQL version on Travis CI to one that isn't over 3 years out of date
* feat: test psql without defineProperty
* feat: refactor psql
remove .bind calls, use module.pool.query directly
move requires to top of file
move promisify to bottom so .init etc are promisified
* feat: mongodb
move requires to bottom
* feat: redis
* fix: cache refactor
db.getObjectField no longer loads entire object
db.getObjectsFields only clones data once
more tests
* feat: add back cache to redis
db.getObjectField no longer loads entire object
* feat: wip, category watch change
* feat: pass data to client
* feat: allow changing state
* fix: account page categories
* fix: show in unread if topic is followed or category is watched
* feat: add default watch state to acp
* feat: save user category watch state
* feat: update unread recent pages
* fix: remove dupe code
* fix: flip conditions
* fix: handle empty arrays
* fix: ignore/watch on others profile
* feat: upgrade script for category states
if there are any users ignoring categories set their state in new zset and delete cid:<cid>:ignorers
* fix: upgrade
* fix: tests
* fix: redis count
* fix: more tests
* [test/database/list] Fix test list 4 being used in two different tests
* [database/postgres] PostgreSQL database driver
* [database/postgres] Make transactions work based on continuation scope.
* [database/postgres] Implement nested transactions
* eslint --fix
* Add database changes from earlier this week to the PostgreSQL driver.
* Fix typo
* Fix postgres.incrObjectFieldBy returning undefined instead of null when given NaN
* [database/postgres] Fix sortedSetsCard returning an array of strings.
* Update socket.io postgres adapter
* Fix PostgreSQL erroring when multiple updates are made to the same sorted set entry in a single operation.
Add a test case to catch this error.
* Fix lint errors.
* Only prune sessions on one instance in a cluster to avoid deadlocks.
They're caught and handled by the database server, but they spam the logs.
* Fix arguments.slice.