Requests.php will mistakenly decompress a .tgz file (or other gzipped files) downloaded from sites that pass a "content-encoding: none" header.

In the case of .tgz files, you end up with a misnamed, uncompressed tar file. Often manageable, but not if there needs to be an md5/sha1/etc checksum confirmation.

The decompress code is wrapped by if (isset($return->headers['content-encoding'])), so the decompress code fires even though the encoding is "none". Should there be a check for a proper encoding type, or at minimum, check for "none" before decompressing?

Ran into this with bitbucket. A sample file to demonstrate the issue: https://bitbucket.org/jerrm-bb/testdownload/downloads/outcnam-test.tgz