release 2.2.0RC1

* Fixed PHP-8.1 compatibility (see gh issues #161, #157, and #156)
* Added support for ZEND_ACC_NOT_SERIALIZABLE and magic __{,un}serialize

Author: m6w6

php_msgpack.h

@@ -3,7 +3,7 @@
 
 #include "Zend/zend_smart_str.h" /* for smart_string */
 
-#define PHP_MSGPACK_VERSION "2.1.2"
+#define PHP_MSGPACK_VERSION "2.2.0RC1"
 
 extern zend_module_entry msgpack_module_entry;
 #define phpext_msgpack_ptr &msgpack_module_entry