-- Removed support for etag hashing through libmhash
-- Removed HTTP_ETAG_* and HttpResponse::ETAG_* constants
-- Changed http.etag_mode INI setting to acccept a string specifying the
- hash algorithm to use for generating etags.
- CRC32, MD5 and SHA1 are available out of the box with MD5 being the default.
- If pecl/hash is available, any algorithm this extension provides can be used.
++ Added feature request http_put_data() and HttpRequest::(set|get|add)PutData().
++ Added 'range' request option.
++ Added 'proxytype' request option.
++ Added HTTP_PROXY_HTTP, HTTP_PROXY_SOCKS4, HTTP_PROXY_SOCKS5 constants.