Merge branch '_stream' of https://github.com/pulpe/youtube-dl into pulpe-_stream

youtube_dl/extractor/__init__.py

@@ -205,6 +205,7 @@ from .stanfordoc import StanfordOpenClassroomIE
 from .statigram import StatigramIE
 from .steam import SteamIE
 from .streamcloud import StreamcloudIE
+from .streamcz import StreamCZIE
 from .sztvhu import SztvHuIE
 from .teamcoco import TeamcocoIE
 from .techtalks import TechTalksIE