SE-0546: Same-file memberwise initializer extensions

Howdy, rascals! The review of SE-0546: Same-file memberwise initializer extensions begins now and runs through September 4th, 2026. Reviews are an important part of the Swift evolution process. All review feedback should be either on this forum thread or, if you would like to keep your feedback private, directly to me as the review manager. When contacting the review manager directly, please put "SE-0546" in the subject line. What goes into a review? The goal of the review process is to impr...