While we're at it, also drop "experimental" moniker for --call-home - should work fine.
Avoid confusion over args/kwargs.
Fixes #520, fixes #3626.
Closes #3618, fixes #721, fixes #2481, fixes #4551, closes #1020.
Conflicts: youtube_dl/YoutubeDL.py
The codec seems to be consistently aac, so state that in our metadata.
On FreeBSD, the default HTTPS handler is missing certificates, so use our own.