Minimum working iterator version

Checkpointing. This is a minimum working version using the iterator. I basically hacked consuming the iterator since I want to switch directions, but this is a good place to come back to.

backend/app/util/utils.py

@@ -1,6 +1,6 @@
 import json
 from numpy import float32, integer
-from flask import make_response, jsonify
+from flask import make_response, jsonify, Response
 
 class Float32JSONEncoder(json.JSONEncoder):
     def default(self, obj):
@@ -31,4 +31,13 @@ def make_payload(data, errormessage="", errorcode=200):
         }
     }), errorcode)
 
+def make_streaming_response(data_generator, errorcode=200, content_type="application/json"):
+    # TODO headers
+    return Response(data_generator, status=errorcode, content_type=content_type)
+
+
+
+
+
+