…espaced classes so other autoloaders have chance to handle these Calls to `class_exists` will, by default, call to `__autoload`, which is actually handled by Yii's `autoload`. Anyways, in PHP 5.3 namespace classes, Yii will try to include a file that could not exist, and thus causing warnings like `include(): Failed opening <path> for inclusion`. A simple check if the file exists before actually trying to include seems like a good idea and is avoiding all those warnings.
…Algorithm` specified as array
removed it from travis.yml http://docs.travis-ci.com/user/build-environment-updates/2015-02-03/