Provides interface to libevent library
This is an extension to efficiently schedule I/O, time and signal based events using the best I/O notification mechanism available for specific platform. This is a port of libevent to the PHP infrastructure. Version 1.0.0 introduces: * new OO API breaking backwards compatibility * support of libevent 2+ including HTTP, DNS, OpenSSL and the event listener. Note, event-1.0.0 and greater is not compatible with previous versions.