Update Here Geocoder to use API version 7

[Tafkas]

The Here geocoder uses the API version v6, which is no longer actively develeoped and only available in maintenance mode:

https://developer.here.com/documentation/geocoder/dev_guide/topics/what-is.html

The new version of the geocoder is 7: https://developer.here.com/documentation/geocoding-search-api/api-reference-swagger.html

https://developer.here.com/documentation/geocoding-search-api/migration_guide/index.html

[Tafkas]

I've just noticed that the code is already in the master branch. I guess we just have to wait for a new tag 2.2 to be released.

[syphar]

@ijl @KostyaEsmukov is there any way to release this update?

Is there anything we can support with?

[KostyaEsmukov]

I'll try to get my hands on making a release this week.

[KostyaEsmukov]

Released geopy=2.2.0.