o Clear the timer cache on entering the event loop; reported by Victor Chang
o Only bind the socket on connect when a local address has been provided; reported by Alejo Sanchez
o Allow setting of local port for evhttp connections to support millions of connections from a single system; from Richard Jones.
+ o Clear the timer cache when leaving the event loop; reported by Robin Haberkorn
Changes in 1.4.0:
o allow \r or \n individually to separate HTTP headers instead of the standard "\r\n"; from Charles Kerr.