Update changelog

Pedro Piñera · Pedro Piñera · commit bc8e2f5a8056 · 2019-06-10T12:37:23.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -31,6 +31,7 @@
 - Carthage integration https://github.com/tuist/xcodeproj/pull/416 by @pepibumur.
 - Relative path is wrong when referencing file outside of project folder https://github.com/tuist/xcodeproj/issues/423 by @damirdavletov
 - [crash] Fatal error: Duplicate values for key https://github.com/tuist/xcodeproj/issues/426 by @toshi0383
+- Change PBXContainerItemProxy.remoteGlobalID attribute to support object references https://github.com/tuist/xcodeproj/pull/445 by @yonaskolb
 
 ## 6.7.0
 
