Chunked and encoded gzip not decompressing correctly in streams

[theelous3]

From #95 specifically #95 (comment)

The gzip module blows and isn't sophisticated enough to decompress streams. Drop it in favour of full zlib.

https://docs.python.org/3/library/zlib.html#zlib.decompress
https://stackoverflow.com/a/22311297

[gmacon]

I bumped into this today, and I found a work-around: I added ("Accept-Encoding", "identity") to the request headers to prevent the server from sending me compressed data.

I noticed that #157 has merge conflicts; I'd be happy to rebase it onto the latest master if other folks don't think they'll have time.

[theelous3]

@gmacon Yes! I'm super swamped at a new position and haven't/won't have time for a while. Please feel free to repair the pr :)