Update version and changelog for 4.5.0

CHANGELOG.md

@@ -1,5 +1,25 @@
 # Changelog
 
+## v4.5.0 - 2021-08-02
+
+**Important notes**
+
+> This is BREAKING CHANGE for JWT middleware users.
+
+JWT library for JWT middleware has been changed from [github.com/dgrijalva/jwt-go](https://github.com/dgrijalva/jwt-go) to 
+[github.com/golang-jwt/jwt](https://github.com/golang-jwt/jwt) due former library being unmaintained and having security 
+issues. For detailed information please read https://github.com/labstack/echo/discussions/1940
+
+You can change library imports as follows: 
+```bash
+find -type f -name "*.go" -exec sed -i "s/dgrijalva\/jwt-go/golang-jwt\/jwt/g" {} \;
+go mod tidy
+```
+
+**Fixes**
+
+* Change JWT library to `github.com/golang-jwt/jwt` [#1941](https://github.com/labstack/echo/issues/1941)
+
 ## v4.4.0 - 2021-07-12
 
 **Fixes**

echo.go

@@ -241,7 +241,7 @@ const (
 
 const (
 	// Version of Echo
-	Version = "4.4.0"
+	Version = "4.5.0"
 	website = "https://echo.labstack.com"
 	// http://patorjk.com/software/taag/#p=display&f=Small%20Slant&t=Echo
 	banner = `