Changes:
- Log ergast error tracebacks on level DEBUG instead of WARNING to avoid
confusion when a failure was to be expected.
Bug Fixes:
- Fixed: no session results for Verstappen (driver number 1 vs 33)
(by @vlesierse) - Fixed: slicing telemetry by using multiple laps as a reference returns no
data if some laps have NaT values for 'Time' or 'LapStartTime' - Fixed regression: Loading of livetiming no longer possible since v2.2.0 if
recording does not contain a driver list