used released gevent
release
disable nagle's algorithm.
In a previous commit, I added logic to set socket.TCP_NODELAY on
sockets to workers.  Hopefully, this will cause keep-alives to be sent
quicker.

In this commit, we collapse writes, when possible, to try to avoid
sending very small packets.
changes
don't build dev servers by default.  Let's give travis a chance. :)
Merge pull request #6 from zopefoundation/collapse-writes

Collapse writes and disable nagle's algorithm