update Rails dependency & framework; combine depfu & railsdiff

[neumayr]

Hey depfu 👋

Wanted to share this idea with you.
E.g. for selected gems like rails, to also submit framework changes that come with an update.

Railsdiff is a great resource to view Rails framework changes. They also provide an API interface. Some version updates are with a lot of changes, but the majority are easy and only touch files that in most cases are not touched by the developer.

• http://railsdiff.org/5.1.3/5.1.4
• http://api.railsdiff.org/v5.1.3/v5.1.4

[theflow]

Thanks for taking the time to report the idea! Definitely something that we could try out at some point, although I'm a bit afraid of merge conflicts and how to resolve or even surface them.