Update CHANGELOG.md (swiftlang#15707)

Author: benrimmington

CHANGELOG.md

@@ -208,6 +208,8 @@ Swift 4.2
 Swift 4.1
 ---------
 
+### 2018-03-29 (Xcode 9.3)
+
 * [SE-0075][]
 
   Compile-time testing for the existence and importability of modules is now
@@ -7063,7 +7065,19 @@ Swift 1.0
 [SE-0197]: <https://github.com/apple/swift-evolution/blob/master/proposals/0197-remove-where.md>
 [SE-0198]: <https://github.com/apple/swift-evolution/blob/master/proposals/0198-playground-quicklook-api-revamp.md>
 [SE-0199]: <https://github.com/apple/swift-evolution/blob/master/proposals/0199-bool-toggle.md>
+[SE-0200]: <https://github.com/apple/swift-evolution/blob/master/proposals/0200-raw-string-escaping.md>
+[SE-0201]: <https://github.com/apple/swift-evolution/blob/master/proposals/0201-package-manager-local-dependencies.md>
+[SE-0202]: <https://github.com/apple/swift-evolution/blob/master/proposals/0202-random-unification.md>
+[SE-0203]: <https://github.com/apple/swift-evolution/blob/master/proposals/0203-rename-sequence-elements-equal.md>
+[SE-0204]: <https://github.com/apple/swift-evolution/blob/master/proposals/0204-add-last-methods.md>
+[SE-0205]: <https://github.com/apple/swift-evolution/blob/master/proposals/0205-withUnsafePointer-for-lets.md>
 [SE-0206]: <https://github.com/apple/swift-evolution/blob/master/proposals/0206-hashable-enhancements.md>
+[SE-0207]: <https://github.com/apple/swift-evolution/blob/master/proposals/0207-containsOnly.md>
+[SE-0208]: <https://github.com/apple/swift-evolution/blob/master/proposals/0208-package-manager-system-library-targets.md>
+[SE-0209]: <https://github.com/apple/swift-evolution/blob/master/proposals/0209-package-manager-swift-lang-version-update.md>
+[SE-0210]: <https://github.com/apple/swift-evolution/blob/master/proposals/0210-key-path-offset.md>
+[SE-0211]: <https://github.com/apple/swift-evolution/blob/master/proposals/0211-unicode-scalar-properties.md>
+[SE-0212]: <https://github.com/apple/swift-evolution/blob/master/proposals/0212-compiler-version-directive.md>
 
 [SR-106]: <https://bugs.swift.org/browse/SR-106>
 [SR-419]: <https://bugs.swift.org/browse/SR-419>