misc small fixes

troi/filters.py

@@ -237,7 +237,7 @@ def outputs():
         return [Recording]
 
     def read(self, input):
-        recordings = inputs[0]
+        recordings = input[0]
         output = []
         for rec in recordings:
             if rec.name is not None and (rec.artist and rec.artist.name is not None) and rec.mbid is not None:

troi/http_request.py

@@ -1,7 +1,7 @@
 import requests
 from time import time, sleep
 from requests.adapters import HTTPAdapter
-from requests.packages.urllib3.util.retry import Retry
+from urllib3.util.retry import Retry
 from urllib.parse import urlparse
 
 # Index keep track of rate limits of the various services 

troi/playlist.py

@@ -1,12 +1,11 @@
 import logging
 from collections import defaultdict
 import json
-from time import sleep
 
 
 import spotipy
 from troi.tools.utils import AppleMusicAPI
-from troi.http_request import http_get
+from troi.http_request import http_get, http_post
 from troi import Recording, Playlist, PipelineError, Element, Artist, ArtistCredit, Release
 from troi.operations import is_homogeneous
 from troi.print_recording import PrintRecordingList