[Vehicles]: Documented that temp1 to temp4 in GET /vehicles/events and GET /vehicles/{registration}/events are 0 when the sensor reported no value, and on every event when the sensor is not connected.
[General]: Security improvements.
[General]: Various internal improvements and under-the-hood tweaks.
[Authentication]: Fixed an issue where a request with valid credentials could intermittently be rejected with HTTP 401 Unauthorized. When the account cannot be verified at that moment, the request now returns HTTP 503 Service Unavailable.
[Fuel]: Fixed an issue where GET /fuel/fills returned HTTP 500 Internal Server Error for a 24 hour period that includes the end of daylight saving time.