Hanami contributors

All arthurgeek commits

Get rid of #TODOview
Pointing to a specific tag of Railsutils
More false-positivesmodel
Those tests where passing even with `update` commented outmodel
Fix: the right status code here is `400`controller
Document redirect with custom status codecontroller
Fix parameter name in documentationcontroller
Small documentation fixcontroller
Fix READMEcontroller
Typo: `Roting` => `Routing`router