++ Preliminiary HTTP2 support for http\Client (libcurl with nghttp2 support)
++ Improved performance of HTTP info parser (request/response line)
++ Improved performance of updating client observers
++ Improved performance of http\Env\Response output to streams
++ Added http\Header\Parser class
++ Added http\Client::configure() method accepting an array with the following options for libcurl:
+ . maxconnects (int, size of the connection cache)
+ . max_host_connections (int, max number of connections to a single host, libcurl >= 7.30.0)
+ . max_pipeline_length (int, max number of requests in a pipeline, libcurl >= 7.30.0)
+ . max_total_connections (int, max number of simultaneous open connections of this client, libcurl >= 7.30.0)
+ . pipelining (bool, whether to enable HTTP/1.1 pipelining)
+ . chunk_length_penalty_size (int, chunk length threshold for pipelining, libcurl >= 7.30.0)
+ . content_length_penalty_size (int, size threshold for pipelining, libcurl >= 7.30.0)
+ . pipelining_server_bl (array, list of server software names to blacklist for pipelining, libcurl >= 7.30.0)
+ . pipelining_site_bl (array, list of server host names to blacklist for pipelining, libcurl >= 7.30.0)
+ . use_eventloop (bool, whether to use libevent, libcurl+libevent)
++ Added http\Client::getAvailableOptions() and http\Client::getAvailableConfiguration() methods
++ Added support for HTTP2 if libcurl was built with nghttp2 support.
++ Added http\Client\Curl\HTTP_VERSION_2_0 constant (libcurl >= 7.33.0)
++ Added http\Client\Curl\TLS_AUTH_SRP constant (libcurl >= 7.21.4)
++ Added pinned_publickey SSL request option (libcurl >= 7.39.0)
++ Added tlsauthtype, tlsauthuser and tlsauthpass SSL request option (libcurl >= 7.21.4)
++ Added verifystatus (a.k.a OCSP) SSL request option (libcurl >= 7.41.0)
++ Added proxyheader request option (libcurl >= 7.37.0)
++ Added unix_socket_path request option (libcurl >= 7.40.0)
+* Fixed compress request option
+* Fixed parsing authorities of CONNECT messages
+* Fixed parsing Content-Range messages
+* Fixed http\Env\Response to default to chunked encoding over streams
+* Fixed superfluous output of Content-Length:0 headers
+* Fixed persistent easy handles to be only created for persistent multi handles
+* Fixed the header parser to accept not-yet-complete header lines
+- Deprecated http\Client::enablePipelining(), use http\Client::configure(["pipelining" => true]) instead
+- Deprecated http\Client::enableEvents(), use http\Client::configure(["use_eventloop" => true]) instead
+- Removed the cookies entry from the transfer info, wich was very slow and generated a Netscape formatted list of cookies