null passed to construct, assumes config values

[poing]

$earmark = new Earmark(null, null, null, 20000, null);  // Start with 20000

Running $earmark->get() returns ECHO00020000 instead of 20000 as I have set it in the config to prefix with ECHO with a padding of 8. Is there a better way to handle this? As the extension is an integer value in the database it will not accept it.

---

This is caused by the construct() prioritizing values from the config when null are passed to the method().

[poing]

Part of the fix, requires passing the config values to the singleton in EarmarkServiceProvider.php.

[poing]

Need to impliment and test, but the fix will probably be:

        // @codeCoverageIgnoreStart
        //Poing\Earmark\Http\Controllers
        $this->app->singleton('earmark', function () {
-           return new Serial;
+           return new Serial(CONFIG VALUES);
        });

Passing the configuration values to the singleton

-and-

removing null handling from the construct().