Bump v1.9.1

Author: curzolapierre

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## To be Released
 
+## v1.9.1
+
 - build(go.mod): update github.com/Scalingo/go-utils/errors from v3.0.0 to v3.1.1
 
 ## v1.9.0

README.md

@@ -1,4 +1,4 @@
-# Custom Router and Handler v1.9.0
+# Custom Router and Handler v1.9.1
 
 [ ![Codeship Status for Scalingo/go-handlers](https://app.codeship.com/projects/9bd8e5d0-d609-0135-e8d1-2aadb9628cc1/status?branch=master)](https://app.codeship.com/projects/263154)
 
@@ -102,7 +102,7 @@ Bump new version number in `CHANGELOG.md` and `README.md`.
 Commit, tag and create a new release:
 
 ```sh
-version="1.9.0"
+version="1.9.1"
 
 git switch --create release/${version}
 git add CHANGELOG.md README.md