e7926ae9f4
* support nested encodings * support optional `br` encoding, if brotli package is installed * support optional 'compress' encoding, if ncompress package is installed * response `Content-Encoding` has only unprocessed encodings, or removed * response `Content-Length` is decoded length (usable for filesize metadata) * use zlib for both deflate and gzip decompression * some elements taken from yt-dlp: thx especially coletdjnz