0.2.1

Reorganised code.
Tagged release.

0.2.0

Added PSR-4 improvements.
Changed changelog.rst to CHANGELOG.md
Dropped support for php 5.3

0.1.2

Default value for the content-type header set to text/xml
Added support for different content-type header values

0.1.1

Packagist support
Added changelog.rst
Changed default value of persistanceTimeout in the constructor in order to use ini default_socket_timeout value when null
set parameter timeoutInSeconds of setPersistanceTimeout to default to null to use default_socket_timeout for persistanceFactor when null