Latest version with various bugfixes, also implements support
for using curl instead of its own io class when available; this
avoids the bug that causes severe excess bandwidth use due to
some kind of zlib issue.
This is the upstream commit that merged my query separator fix. It's slightly
after the 1.0.3-beta tag. I eyeballed the other post 1.0.3-beta changes and
none of them looks like any kind of problem, so we may as well just use this
upstream state.
