Update docs in respect to the 7.1.1 release (#250)

* Update docs in respect to the 7.1.1 release

The `StringField` was still referenced but is replaced with the `TextField` now.

* Update HISTORY.rst

add hint to HISTORY.rst for people wondering what happened to StringField

Author: andreasnuesslein

HISTORY.rst

@@ -9,6 +9,7 @@ History
 * Resolve name resolution while delete, create index (#228)
 * Added support for Django 3.0. (#230)
 * Removing old Elasticsearc compatibility (#219)
+* Drop StringField in favor of TextField.
 
 
 7.1.0 (2019-10-29)

docs/source/fields.rst

@@ -219,21 +219,17 @@ Available Fields
   - ``FloatField(attr=None, **elasticsearch_properties)``
   - ``IntegerField(attr=None, **elasticsearch_properties)``
   - ``IpField(attr=None, **elasticsearch_properties)``
+  - ``KeywordField(attr=None, **elasticsearch_properties)``
   - ``GeoPointField(attr=None, **elasticsearch_properties)``
   - ``GeoShapField(attr=None, **elasticsearch_properties)``
   - ``ShortField(attr=None, **elasticsearch_properties)``
-  - ``StringField(attr=None, **elasticsearch_properties)``
+  - ``TextField(attr=None, **elasticsearch_properties)``
 
 - Complex Fields
 
   - ``ObjectField(properties, attr=None, **elasticsearch_properties)``
   - ``NestedField(properties, attr=None, **elasticsearch_properties)``
 
-- Elasticsearch >= 5 Fields
-
-  - ``TextField(attr=None, **elasticsearch_properties)``
-  - ``KeywordField(attr=None, **elasticsearch_properties)``
-
 ``properties`` is a dict where the key is a field name, and the value is a field
 instance.