Upgrade rspec

woot woooooooooot! I did it! 

I basically did everything on this page:
https://relishapp.com/rspec/docs/upgrade

Very clever use of `super` here ... maybe it's possible to make it a bit simpler? Did you also go down the rabbit hole of reading about the opinions behind `its ...` and the `is_expected.to ...` replacement, and whether they are good things or not? Anyway, maybe here we could rewrite these specs into ordinary `it 'has a name'` variants. A bit more verbose, but maybe easier to read because one doesn't need to wrap around one's head around the meaning of super() first.