- fixed a "map sync" issue with multiple open tabs, #446
- fixed a bug where connections "disappear" from map for some seconds
- fixed a bug where "open ingame info" for char/system does not work in some UI tables
- upgraded [_Font Awesome_](https://fontawesome.com) icon lib `v5.2.0` → `v5.9.0`
- improved file structure for _Model_ classes (`app/main/model/..`). Group by database name
- improved database connection handling (fixed persistent DB connections)
- added status information for "WebSocket" installations to `/setup` page (e.g. active connections, startup time)
- removed "ext-zmq" as required PHP extension
- removed "react/zmq" as required Composer package
- removed "websoftwares/monolog-zmq-handler" as required Composer package
- new "Redis monitoring" UI on `/setup` page, closed#745
- improved request handling for 3rd party APIs (ESI, SSO, GitHub) see [exodus4d/pathfinder_esi/README.md](https://github.com/exodus4d/pathfinder_esi/blob/b5d4b19/README.md)
- improved `/setup` page, new actions for clear cache/Redis data