add get followed streams

Author: anxdpanic

resources/lib/twitch/api/helix/streams.py

@@ -38,6 +38,17 @@ def get_streams(game_id=list(), user_id=list(),
     return q
 
 
+# required scope: user:read:follows
+@query
+def get_followed(user_id, after='MA==', first=20, use_app_token=False):
+    q = Qry('streams', use_app_token=use_app_token)
+    q.add_param(keys.AFTER, Cursor.validate(after), 'MA==')
+    q.add_param(keys.FIRST, IntRange(1, 100).validate(first), 20)
+    q.add_param(keys.USER_ID, user_id)
+
+    return q
+
+
 # required scope: none
 @query
 def get_metadata(game_id=list(), user_id=list(),