geocoder 8.x-2.0-alpha3

This version has been done during the Global Sprinweekend.

Changes since 8.x-2.0-alpha2:

• Update README file.
• Remove the InputFormat object. Fix indentation on .info.yml files. Fix all PHPCS warning. Fix the Address DataPrepare plugin. Fix the Geocode formatter. Fix namespaces. Fix Geohash and Geometry dumper. Remove unused use statements.
• Remove the InputFormat object.
• Remove geophp dependency from main module and move it to geocoder_geofield.
• Fix code syntax.
• Add a formatter for field type: address (from contrib module address)
• Move geofield stuff into its own submodule.
• Update code, move logic, update Geohash dumper plugin.
• Add the geohash dumper.
• Add the Geohash and Wkt input format plugin.
• Create the Input Format plugin type and use it.
• Use dependency injection for Dumper plugins.
• Remove the dependency to composer_manager so you can use any Composer manager.
• Fix custom Geocoder classes namespaces. Thanks @bojanz.
• Remove field post processing from hook_entity_presave() and move it to the Widget::massageFormValues(). We need to create plugins for input_format.
• #2654270: Support the Address module First part of the integration with the Address contrib module, I still need to check how works the API. Once it's done, I'll provide a new dumper especially for Address. Right now, the simple AddressText dumper convert an array into a string, nothing fancy. We also need to have a look at https://www.drupal.org/node/2654584 and fix it.
• First attempt of a Reverse Geocode plugin. Split of the hook_entity_presave() into different handy helpers functions.
• Fix JSON syntax error in composer.json