Merge pull request #505 from benrimmington/SE-0137

[SE-0137] Update status, add mailing list threads

Author: jtbandes

proposals.xml

@@ -144,7 +144,7 @@ just loads it via JavaScript. Hence, the following declaration isn't used.
 <proposal id="0134" status="implemented" swift-version="3" name="Rename two UTF8-related properties on String" filename="0134-rename-string-properties.md"/>
 <proposal id="0135" status="implemented" swift-version="3" name="Package Manager Support for Differentiating Packages by Swift version" filename="0135-package-manager-support-for-differentiating-packages-by-swift-version.md"/>
 <proposal id="0136" status="implemented" swift-version="3" name="Memory Layout of Values" filename="0136-memory-layout-of-values.md"/>
-<proposal id="0137" status="accepted" name="Avoiding Lock-In to Legacy Protocol Designs" filename="0137-avoiding-lock-in.md"/>
+<proposal id="0137" status="implemented" swift-version="3" name="Avoiding Lock-In to Legacy Protocol Designs" filename="0137-avoiding-lock-in.md"/>
 
 <!--
 Recognized values for a proposal's status:

proposals/0137-avoiding-lock-in.md

@@ -3,14 +3,15 @@
 * Proposal: [SE-0137](0137-avoiding-lock-in.md)
 * Author: [Dave Abrahams](https://github.com/dabrahams), [Dmitri Gribenko](https://github.com/gribozavr)
 * Review Manager: [John McCall](https://github.com/rjmccall)
-* Status: **Accepted**
+* Status: **Implemented (Swift 3)**
+* Decision Notes: [Rationale](https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160815/026300.html)
 
 ## Introduction
 
 We propose to deprecate or move protocols that shouldn't be a part of
 the standard library's public API going forward.
 
-Swift-evolution thread: [Discussion thread topic for that proposal](https://lists.swift.org/pipermail/swift-evolution/)
+Swift-evolution threads: [Late Pitch](https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160808/026071.html), [Review](https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160808/026103.html)
 
 ## Motivation