prevent using monolog 1.3.x-dev before PSR-3
prevent using monolog 1.3.x-dev before PSR-3

Before symfony isn't updated to PSR-3, monolog 1.3.x-dev will lead to fatal error.
Force monolog to latest stable.
lyrixx/monolog-bundle,symfony/monolog-bundle,tseho/MonologBundle,damour/monolog-bundle,symfony/MonologBundle,peterkokot/MonologBundle,xabbuh/MonologBundle