Update CHANGELOG for Firestore v1.4.3 (#3472)

wilhuff · web-flow · commit 3ce13dcc4839 · 2019-07-30T13:38:19.000-07:00
diff --git a/Firestore/CHANGELOG.md b/Firestore/CHANGELOG.md
@@ -1,4 +1,6 @@
 # Unreleased
+
+# v1.4.3
 - [changed] Transactions are now more flexible. Some sequences of operations
   that were previously incorrectly disallowed are now allowed. For example,
   after reading a document that doesn't exist, you can now set it multiple
