Bug fixes

Some improvements and bugfixing.

fixing ld+json errors

8.x-1.0-alpha2

* Issue #3160816: Update package requirement for guzzle6-adapter
* Issue #3162061: Document workaround for guzzle6-adapter 1.x

Better drupal.org documentation on Upgrading from Geocoder 2.x to 3.x
Issue #3159046 by michael_nls: Use country_manager_interface
Issue #3154186: OSM do not work with organisation
Issue #3131489 by JeroenT: skip_not_empty_value is missing in geocoder_field.schema.yml

Issue #3154186: OSM do not work with organisation
Issue #3152846 by ZeiP: The post_update script fails when not all plugins are present in 3.x
Issue #3161809 by harishh: License "GPL-2.0+" is a deprecated SPDX license identifier
geocoder_field.schema.yml updated
ArcGisOnline provider case correct definition
Issue #3160832 by yonas.legesse, hussainweb: Support for v2.0 of php-http/guzzle6-adapter

Hotfix for causing a fatal error when no image field is selected.