+ Classes HttpMessage and HttpRequestPool implement Countable if PHP >= 5.1 with SPL is available
+ Class HttpMessage implements Serializable if PHP >= 5.1 is available
* Fixed a bug that caused a warning about an invalid curl handle at HttpRequestPool destruction
+ Classes HttpMessage and HttpRequestPool implement Countable if PHP >= 5.1 with SPL is available
+ Class HttpMessage implements Serializable if PHP >= 5.1 is available
* Fixed a bug that caused a warning about an invalid curl handle at HttpRequestPool destruction