Bugfix: first tweet of each paged was being ignored

lib/utils.py

@@ -440,7 +440,7 @@ def get_tweets_page_fast(
     """
 
     tweets = collection\
-        .find({"id": {"$lt": page_index}})\
+        .find({"id": {"$lte": page_index}})\
         .sort("id", pymongo.DESCENDING)\
         .limit(page_size)
     return tweets