Add collection field to default list of fields to include in output (#276)

* Add collection field to default list of fields to include in output

* Update changelog

* Linting

Co-authored-by: Rob Emanuele <[email protected]>

Author: robintw

CHANGES.md

@@ -4,6 +4,7 @@
 
 ### Added
 
+* Added `collections` attribute to list of default fields to include, so that we satisfy the STAC API spec, which requires a `collections` attribute to be output when an item is part of a collection
 ### Removed
 
 ### Changed

stac_fastapi/extensions/stac_fastapi/extensions/core/fields.py

@@ -38,6 +38,7 @@ class FieldsExtension(ApiExtension):
             "links",
             "assets",
             "properties.datetime",
+            "collection",
         }
     )