title: How to upgrade from Rails 5.1 to Rails 6.0?
body: <p>The title sums it up pretty much. </p>
  
  <p>I want to do it via the console using the `bundler. There are several changes on the way rails has handled things such as the frontend. More details over <a href="https://naildrivin5.com/blog/2016/05/17/announcing-rails-6-an-imagined-roadmap.html" rel="nofollow noreferrer">here</a>. </p>
  
  <p>Will I have to rewrite frontend of my app again? Will it be enough to just update the bins and executables manually? Or run <code>$ rails app:update</code> to overwrite old stuff.</p>