[swift-evolution] [Review] Require self for accessing instance members

[Tino Heth]

> 2. If we do enforce self, method cascading would mitigate some of the repetition.
If both ideas would be decided in a package, I'd rather have method cascading and required self than none of it - but I really doubt that those who want to enforce self where it is optional would vote for any shortcut to work around it...