Herepy

- Introduce IsolineRoutingApi

- Introduce TrafficApi
- Python 3.9 support
- Fix for exception handlers on
* FleetTelematicsApi
* GeocoderReverseApi
* PlacesApi

- Fix error handling for new unauthorized responses eifinger

- Add language support to Geocoder and Geocoder Autocomplete APIs

With this release some APIs updated to new endpoints

- GeocoderAPI
- GeocoderAutoCompleteAPI
- PlacesAPI
- ReverseGeocoderAPI

I try to keep interfaces same as much as possible, but some functions
and response models removed completely as new endpoints don't support
anymore.

Deleted response models:
- herepy.PlacesSuggestionsResponse
- herepy.PlaceCategoriesResponse

Main JSON nodes also changed in response models.

- Introduce Fleet Telematics API Client