This commit adds IO.Stream as a parent class
to TorStream this extremely helps with compatibility
and lowers the number of necessary changes to end
users' code.

This commit removes the chunk helper function
in favor the already existing F# method named
ChunkBySize, not sure why I didn't find it before.

This test is mostly for flexing TorStream's
compatiblity with SslStream.

Also apparently some web servers don't include
Content-Encoding header in that case we just assume
that there's no special encoding.