add autoloader for manuel static install
add support for multiline descriptions
backport SimpleXMLElement strict mode
add support for user impersonation
reach 100% test coverage
greatly improve test coverage + minor improvements
added multiple tests to stabilize the lib
fix string escaping, add public lastCallFailed() method, add possibility to add customer auth header
fix upload header
bump version
allow username/password auth
improve retrieveAll
add custom fields support
add license + chainable setters
fix default offset setting
fix retrieveAll (bis)
fix retrieveAll