Update CHANGELOG for Firestore v1.7.0 (#4195)

wilhuff · maksymmalyhin · commit 5ef3580d7e77 · 2019-10-30T14:26:54.000-04:00
diff --git a/Firestore/CHANGELOG.md b/Firestore/CHANGELOG.md
@@ -1,4 +1,6 @@
 # Unreleased
+
+# v1.7.0
 - [feature] Added `whereField(_:in:)` and `whereField(_:arrayContainsAny:)` query
   operators. `whereField(_:in:)` finds documents where a specified field’s value
   is IN a specified array. `whereField(_:arrayContainsAny:)` finds documents
