SE-0161 Smart KeyPaths were implemented in 4.0.x

Author: DougGregor

proposals/0161-key-paths.md

@@ -3,7 +3,7 @@
 * Proposal: [SE-0161](0161-key-paths.md)
 * Authors: [David Smith](https://github.com/Catfish-Man), [Michael LeHew](https://github.com/mlehew), [Joe Groff](https://github.com/jckarter)
 * Review Manager: [Doug Gregor](https://github.com/DougGregor)
-* Status: **Accepted**
+* Status: **Implemented (Swift 4.0)**
 * Decision Notes: [Rationale](https://lists.swift.org/pipermail/swift-evolution-announce/2017-April/000356.html)
 * Previous Revision: [1](https://github.com/apple/swift-evolution/blob/55e61f459632eca2face40e571a517919f846cfb/proposals/0161-key-paths.md)