update readme

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e67f1ad49248aa39a99f172535988973838ad06..208829e6b17bd78057269fd02fd2fcc4d97c776d 100644 (file)
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -32,13 +32,16 @@ The document follows the conventions described in [“Keep a CHANGELOG”](http:
 ## UNRELEASED [2.5.3]
 
 ### Added
+- added gitter badge in readme
 
 
 ### Changed
+- svg.js now runs in strict mode
 
 
 ### Fixed
 - fixed svg.js.d.ts (#644 #648)
+- fixed bug in `el.flip()` which causes an error when calling flip without any argument
 
 ### Removed
 - component.json (#652)