* 'master' of https://github.com/yt-dlp/yt-dlp:
[extractor] Update `manifest_url`s after redirect (#3575)
[InfoQ] Don't fail on missing audio format (#3573)
[extractor] Update dash `manifest_url` after redirects (#3563)
[twitcasting] Pass headers for each formats (#3568)
[Niconico] Support 2FA (#3559)
[cleanup,build] Cleanup some build-related code
[cleanup] Delete unused extractors
Using https://github.com/asottile/pyupgrade
1. `__future__` imports and `coding: utf-8` were removed
2. Files were rewritten with `pyupgrade --py36-plus --keep-percent-format`
3. f-strings were cherry-picked from `pyupgrade --py36-plus`
Extractors are left untouched (except removing header) to avoid unnecessary merge conflicts
* All modules and binary names are changed
* All documentation references changed
* yt-dlp no longer loads youtube-dlc config files
* All URLs changed to point to organization account
Co-authored-by: Pccode66
Co-authored-by: pukkandan
In pycodestyle 2.1.0, E305 was introduced, which requires two blank
lines after top level declarations, too.
See https://github.com/PyCQA/pycodestyle/issues/400
See also #10689; thanks @stepshal for first mentioning this issue and
initial patches
From now on, the line
from __future__ import unicode_literals
should be contained in every single Python file lest we run into any more 2.x/3.x issues.
Going forward, we're likely to develop on 3.x only and would likely miss subtle bugs otherwise.
