docs: update

Author: fengyuanchen

CHANGELOG.md

@@ -1,9 +1,13 @@
 # Changelog
 
+## next
+
+- Improve escaping function to avoid to escape HTML entities repeatedly.
+
 ## 1.3.4 (Jun 1, 2019)
 
 - Escape all strings that use in HTML for better security (#269).
-- Fix the missing fide out transition when hide the viewer (#275).
+- Fix the missing fade out transition when hiding the viewer (#275).
 - Decode image name when it comes from URL (#282).
 
 ## 1.3.3 (Apr 6, 2019)