[cleanup] Misc fixes (see desc)

* [tvver] Fix bug in 6837633a4a - Closes #4054
* [rumble] Fix tests - Closes #3976
* [make] Remove `cat` abuse - Closes #3989
* [make] Revert #3684 - Closes #3814
* [utils] Improve `get_elements_by_class` - Closes #3993
* [utils] Inherit `Namespace` from `types.SimpleNamespace`
* [utils] Use `re.fullmatch` for matching filters
* [jsinterp] Handle quotes in `_separate`
* [make_readme] Allow overshooting last line

Authored by: pukkandan, kwconder, MrRawes, Lesmiscore

yt_dlp/extractor/rumble.py

@@ -24,6 +24,11 @@ class RumbleEmbedIE(InfoExtractor):
             'title': 'WMAR 2 News Latest Headlines | October 20, 6pm',
             'timestamp': 1571611968,
             'upload_date': '20191020',
+            'channel_url': 'https://rumble.com/c/WMAR',
+            'channel': 'WMAR',
+            'thumbnail': 'https://sp.rmbl.ws/s8/1/5/M/z/1/5Mz1a.OvCc-small-WMAR-2-News-Latest-Headline.jpg',
+            'duration': 234,
+            'uploader': 'WMAR',
         }
     }, {
         'url': 'https://rumble.com/embed/vslb7v',
@@ -38,6 +43,7 @@ class RumbleEmbedIE(InfoExtractor):
             'channel': 'CTNews',
             'thumbnail': 'https://sp.rmbl.ws/s8/6/7/i/9/h/7i9hd.OvCc.jpg',
             'duration': 901,
+            'uploader': 'CTNews',
         }
     }, {
         'url': 'https://rumble.com/embed/ufe9n.v5pv5f',
@@ -96,6 +102,7 @@ class RumbleEmbedIE(InfoExtractor):
             'channel': author.get('name'),
             'channel_url': author.get('url'),
             'duration': int_or_none(video.get('duration')),
+            'uploader': author.get('name'),
         }