Update version and changelog for 4.2.2 (#1838)

Author: aldas

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## v4.2.2 - 2020-04-07
+
+**Fixes**
+
+* Allow proxy middleware to use query part in rewrite (#1802)
+* Fix timeout middleware not sending status code when handler returns an error (#1805)
+* Fix Bind() when target is array/slice and path/query params complains bind target not being struct (#1835)
+* Fix panic in redirect middleware on short host name (#1813)
+* Fix timeout middleware docs (#1836)
+
 ## v4.2.1 - 2020-03-08
 
 **Important notes**

echo.go

@@ -234,7 +234,7 @@ const (
 
 const (
 	// Version of Echo
-	Version = "4.2.1"
+	Version = "4.2.2"
 	website = "https://echo.labstack.com"
 	// http://patorjk.com/software/taag/#p=display&f=Small%20Slant&t=Echo
 	banner = `