Normalize longitude once
Normalize longitude once

Closes #376
bocops/open-location-code,bocops/open-location-code,bocops/open-location-code,google/open-location-code,bocops/open-location-code,bocops/open-location-code,bocops/open-location-code,bocops/open-location-code,bocops/open-location-code,bocops/open-location-code,google/open-location-code,google/open-location-code,bocops/open-location-code,google/open-location-code,google/open-location-code,google/open-location-code,google/open-location-code,bocops/open-location-code,google/open-location-code,google/open-location-code,google/open-location-code,google/open-location-code