Since Transitous/Motis uses a non-standard implementation of Google's Encoded Polyline Algorithm Format, we needed to implement a custom decoder for it.
Motis returns a EPAF string in the legGeometry field with a custom precision of 7 decimal places in v1 and 6 decimal
places in v2.
Google's implementation uses 5 decimal places, so we need to adjust the precision accordingly.
This package supports every possible precision but is only tested with 5 and 6 decimal places.