initialize log level early

The default log level needs to be initialized before everthing else,
otherwise an error during the option parsing (eg. when an unknown option
is passed) will result in an unessecary stack trace.

Author: splitbrain

src/Base.php

@@ -94,7 +94,7 @@ public function __construct($autocatch = true)
         if ($autocatch) {
             set_exception_handler(array($this, 'fatal'));
         }
-
+        $this->setLogLevel($this->logdefault);
         $this->colors = new Colors();
         $this->options = new Options($this->colors);
     }