-+ Added http\Client\Curl\User interface for userland event loops
-+ Added http\Url::IGNORE_ERRORS, http\Url::SILENT_ERRORS and http\Url::STDFLAGS
-+ Added http\Client::setDebug(callable $debug)
-+ Added http\Client\Curl\FEATURES constants and namespace
-+ Added http\Client\Curl\VERSIONS constants and namespace
-+ Added share_cookies and share_ssl (libcurl >= 7.23.0) options to http\Client::configure()
-+ http\Client uses curl_share handles to properly share cookies and SSL/TLS sessions between requests
-+ Improved configure checks for default CA bundles
-+ Improved negotiation precision
-* Fixed regression introduced by http\Params::PARSE_RFC5987: negotiation using the params parser would receive param keys without the trailing asterisk, stripped by http\Params::PARSE_RFC5987.
-* Fix gh-issue #50: http\Client::dequeue() within http\Client::setDebug() causes segfault (Mike, Maik Wagner)
-* Fix gh-issue #47: http\Url: Null pointer deref in sanitize_value() (Mike, @rc0r)
-* Fix gh-issue #45: HTTP/2 response message parsing broken with libcurl >= 7.49.1 (Mike)
-* Fix gh-issue #43: Joining query with empty original variable in query (Mike, Sander Backus)
-* Fix gh-issue #42: fatal error when using punycode in URLs (Mike, Sebastian Thielen)
-* Fix gh-issue #41: Use curl_version_info_data.features when initializing options (Mike)
-* Fix gh-issue #40: determinde the SSL backend used by curl at runtime (Mike, @rcanavan)
-* Fix gh-issue #39: Notice: http\Client::enqueue(): Could not set option proxy_service_name (Mike, @rcanavan)
-* Fix gh-issue #38: Persistent curl handles: error code not properly reset (Mike, @afflerbach)
-* Fix gh-issue #36: Unexpected cookies sent if persistent_handle_id is used (Mike, @rcanavan, @afflerbach)
-* Fix gh-issue #34: allow setting multiple headers with the same name (Mike, @rcanavan)
-* Fix gh-issue #33: allow setting prodyhost request option to NULL (Mike, @rcanavan)
-* Fix gh-issue #31: add/improve configure checks for default CA bundle/path (Mike, @rcanavan)
+ > *NOTE:*
+ v4.x is PHP-8 only.
+
+ * PHP 8 compatibility
+ - Drop ext-propro support
+ PHP 8 removes the object get/set API from the ZendEngine, which renders
+ that extension dysfunctional. As a consequence, the header property of
+ http\Message and derived classes cannot be modified in place, and thus
+ by reference.
+
+ Changes from beta1:
+ * Fixed configure on systems which do not provide icu-config
+ * Fixed gh-issue #89: Cookie handling cannot be disabled since v3.2.1