Update CHANGELOG for Firestore v0.13.4 (#1840)

wilhuff · web-flow · commit 36b2e1b6afcd · 2018-09-19T10:57:36.000-07:00
diff --git a/Firestore/CHANGELOG.md b/Firestore/CHANGELOG.md
@@ -1,4 +1,6 @@
 # Unreleased
+
+# v0.13.4
 - [fixed] Fixed an issue where the first `get()` call made after being offline
   could incorrectly return cached data without attempting to reach the backend.
 - [changed] Changed `get()` to only make 1 attempt to reach the backend before
