General Tasks
=============
* go over error messages (we throw in exceptions)
* which excpetion we declare we throw ? always declate ZXmlRpcClentException ? what to do when we catch other ZExceptions ?
* better/full error handling of invalid xml structure. i.e.:
    - XML we parse into a value looks like this: <value><array>amitg</array></value>
    - or like this: <params><param><value><struct /></v></p...

Zend_XmlRpc_Client Tasks
===================
* do we want to support multi-signatures ? if we support it in the __getMethodsXML, which signature we will use in the auto detection ?

Zend_XmlRpc_Value Tasks
===================
* add in the auto detect from php variable to native type, a way to auto detect dateTime natve types, use somekind of a preg to identify the iso8601 format...
* do we want to give the user the option to create a specific i4 native values (or integer is good enough)
* check the optimizer bug we have in the bool convertions in php 5.0.x (test2.php)
* maybe to get the exact simplexml error, we should use the php_errormsg global:
    @ini_set('track_errors', 1);
    // do our simple xml action
    @ini_restore('track_errors');
    // get the global $php_errormsg
* make sure the float values are always number without scientific format (to send 0.000006 and not 6.0E-5), we currenlty using sprintf for that
* when parsing XML to struct value, if XML is not valid, throw exception or continue to next member ?
* imporve _xml_entities method for string ?
* add tab indentation to getAsXml() ?