Add references to CHANGELOG.md

Author: benrimmington

CHANGELOG.md

@@ -6431,3 +6431,11 @@ Swift 1.0
 [SE-0145]: <https://github.com/apple/swift-evolution/blob/master/proposals/0145-package-manager-version-pinning.md>
 [SE-0146]: <https://github.com/apple/swift-evolution/blob/master/proposals/0146-package-manager-product-definitions.md>
 [SE-0147]: <https://github.com/apple/swift-evolution/blob/master/proposals/0147-move-unsafe-initialize-from.md>
+[SE-0148]: <https://github.com/apple/swift-evolution/blob/master/proposals/0148-generic-subscripts.md>
+[SE-0149]: <https://github.com/apple/swift-evolution/blob/master/proposals/0149-package-manager-top-of-tree.md>
+[SE-0150]: <https://github.com/apple/swift-evolution/blob/master/proposals/0150-package-manager-branch-support.md>
+[SE-0151]: <https://github.com/apple/swift-evolution/blob/master/proposals/0151-package-manager-swift-language-compatibility-version.md>
+[SE-0152]: <https://github.com/apple/swift-evolution/blob/master/proposals/0152-package-manager-tools-version.md>
+[SE-0153]: <https://github.com/apple/swift-evolution/blob/master/proposals/0153-compensate-for-the-inconsistency-of-nscopyings-behaviour.md>
+[SE-0154]: <https://github.com/apple/swift-evolution/blob/master/proposals/0154-dictionary-key-and-value-collections.md>
+[SE-0155]: <https://github.com/apple/swift-evolution/blob/master/proposals/0155-normalize-enum-case-representation.md>