fixed issues from version parity

deemix/types/Album.py

@@ -91,7 +91,7 @@ class Album:
             self.date.year = release_date[0:4]
             self.date.fixDayMonth()
 
-        self.discTotal = albumAPI.get('nb_disk')
+        self.discTotal = albumAPI.get('nb_disk', "1")
         self.copyright = albumAPI.get('copyright')
 
         if self.pic.md5 == "":

deemix/types/Track.py

@@ -63,6 +63,7 @@ class Track:
         self.trackTokenExpiration = trackAPI['track_token_expire']
         self.MD5 = trackAPI.get('md5_origin')
         self.mediaVersion = trackAPI['media_version']
+        self.filesizes = trackAPI['filesizes']
         self.fallbackID = "0"
         if 'fallback_id' in trackAPI:
             self.fallbackID = trackAPI['fallback_id']