Update CHANGELOG for Firestore v1.17.0 (#6299)

wilhuff · web-flow · commit 0d729f1b8f8e · 2020-08-18T23:53:13.000-07:00
diff --git a/Firestore/CHANGELOG.md b/Firestore/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Unreleased
 
+# v1.17.0
+- [changed] Internal improvements for future C++ and Unity support.
+
 # v1.16.4
 - [changed] Rearranged public headers for future Swift Package Manager support.
   This should have no impact existing users of CocoaPods, Carthage, or zip file
