Correct version diff links, add date for 1.0.4

Author: homebysix

CHANGELOG.md

@@ -2,7 +2,13 @@
 
 All notable changes to this project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org/).
 
-## [1.0.4] - Unreleased
+
+## [Unreleased]
+
+Nothing yet.
+
+
+## [1.0.4] - 2019-10-08
 
 ### Fixed
 
@@ -53,5 +59,8 @@ All notable changes to this project will be documented in this file. This projec
 - Initial release
 
 
-[Unreleased]: https://github.com/homebysix/docklib/compare/v1.0.1...HEAD
+[Unreleased]: https://github.com/homebysix/docklib/compare/v1.0.4...HEAD
+[1.0.4]: https://github.com/homebysix/docklib/compare/v1.0.3...v1.0.4
+[1.0.3]: https://github.com/homebysix/docklib/compare/v1.0.2...v1.0.3
+[1.0.2]: https://github.com/homebysix/docklib/compare/v1.0.1...v1.0.2
 [1.0.1]: https://github.com/homebysix/docklib/compare/v1.0.0...v1.0.1