Support received_recent_date thread ordering.

Author: Jennie Lees

README.md

@@ -109,6 +109,10 @@ for thread in namespace.threads.where(starred=True):
 # List all threads with '[email protected]'
 for thread in namespace.threads.where(any_email='[email protected]').items():
     print thread.subject
+
+# List threads in order of most recently received message (excludes sent messages)
+for thread in namespace.threads.where(sort='received_recent_date'):
+    print thread.subject
 ```
 
 

nylas/client/restful_models.py

@@ -213,6 +213,7 @@ def messages(self):
 class Thread(NylasAPIObject):
     attrs = ["draft_ids", "id", "message_ids", "namespace_id", "object",
              "participants", "snippet", "subject", "subject_date", "tags",
+             "last_message_timestamp", "first_message_timestamp",
              "unread", "starred", "version", "_folders", "_labels"]
     collection_name = 'threads'