* Added a ssml:mark at the end of the serialized SSML to check whether the TTS processor sucessfully synthesized all the provided SSML;
* Reinitialisation of the TCP connection in the AT&T adapter when the ending-mark is not found;
* The text content can be modified by the SSMLAdapter in order to allow us to remove special characters (AT&T can't deal with all of them) before the synthesis.