[ANN] net-http-persistent 1.8 Released

net-http-persistent version 1.8 has been released!

* http://seattlerb.rubyforge.org/net-http-persistent
* https://github.com/drbrain/net-http-persistent

Manages persistent connections using Net::HTTP plus a speed fix for 1.8. It's
thread-safe too!

Using persistent HTTP connections can dramatically increase the speed of HTTP.
Creating a new HTTP connection for every request involves an extra TCP
round-trip and causes TCP congestion avoidance negotiation to start over.

Net::HTTP supports persistent connections with some API methods but does not
handle reconnection gracefully. net-http-persistent supports reconnection
according to RFC 2616.

Changes:

### 1.8 / 2011-06-27

* Minor Enhancement
  * Added Net::HTTP::Persistent#retry_change_requests which allows POST and
    other non-idempotent requests to be retried automatically. Take care when
    enabling this option to ensure the server will handle multiple POSTs with
    the same data in a sane manner.