Release 2.2.6 (mapbox#597)

* [android] [auto] Update properties to version 2.2.6 in preparation for build.

* temporarily edit circle script for release

* revert 2.2.6 changes

* updated changelog

bumped nav version (mapbox#570)

update release script for circleci (mapbox#541)

Several geocoding fixes and additions (mapbox#512)

* several geocoding fixes and additions

* removed log output

* finished making review fixes

* removed unused import