update CHANGELOG for release

CHANGELOG.md

@@ -7,13 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0] - 2019-12-23
+
 ### Added
 - Configure Fingerbank API key through inventory
 - Hide password of `pf` user in DB
 - `packetfence_go` role to install Golang prerequisites for unit tests
 
-### Changed
-
 ### Removed
 - Installation of `pfsql` binary in `/usr/local/pf/bin`
 
@@ -26,5 +26,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Update defaults to reflect packaging changes introduced by PacketFence
   v9.2.0 (#13)
 
-[Unreleased]: https://github.com/inverse-inc/ansible-packetfence/compare/v0.3.0...HEAD
+[Unreleased]: https://github.com/inverse-inc/ansible-packetfence/compare/v0.4.0...HEAD
+[0.4.0]: https://github.com/inverse-inc/ansible-packetfence/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/inverse-inc/ansible-packetfence/compare/v0.2.0...v0.3.0