SE-0269: Increase availability of implicit self in @escaping closures when reference cycles are unlikely to occur

[Ilias_Karim]

@griotspeak

I now want to state more strongly that explaining the nuance of the proposed behavior to newcomers seems like a real challenge. A challenge not obviously worth the gains.

@griotspeak is absolutely correct.

• What is your evaluation of the proposal?
  -1
• Is the problem being addressed significant enough to warrant a change to Swift?
  No
• Does this proposal fit well with the feel and direction of Swift?
  Somewhat