Fluent Interface missing on ConsoleModel::setErrorLevel

[porebskk]

Hello,

contrary to almost all other setter methods on classes that implement the ModelInterface, ConsoleModel::setErrorLevel ist not returning itself when the method is called.
I would assume that it would return $this. I'll be adding a test and a simple fix.

Best regards

[porebskk]

I created a PR see #153

[weierophinney]

Fixed with #153