0.9.1

• [brake] composer.lock file was removed
• [brake] src\helper\PhpVersionChecker.php was removed
• [brake] src\helper\PhpVersionCheckerInterface.php was removed
• [brake] devgroup\grayii\GelfTarget:isThrowableMessage method was removed

0.9.0

• PHP v5.6 supports
• PHP v7.0 supports
• HHVM supports