Release v2.1.6

v2.1.6 (#3257)

Release v2.1.0

Changed branch-alias of `dev-master` to `2.1-dev` (#3038)

* Update branch-alias

* Update composer.json

Release v2.1.0-beta1

Allow setting repeated middlewares. (#2909)

Release v2.0.19

Fixed Middleware does not work as expected when repeatedly configured…

Release v2.0.10

Added auto release. (#2390)

* Update changelog.md

* Added auto release.