Remove dates from CHANGELOG

These are too easy to forget, and a git history offers a decent list of those anyway

CHANGELOG.md

@@ -1,30 +1,30 @@
-## [1.2.1] - 2024-02-27
+## 1.2.1
 
 - Use autoloading for internal modules. A user using Redis does not have to load the ActiveRecord storage backend, for example
 - Ensure that the original Rack response body receives a `close` when reading out for caching
 
-## [1.2.0] - 2024-02-22
+## 1.2.0
 
 - Use memory locking in addition to DB locking in `ActiveRecordBackend`
 
-## [1.1.0] - 2024-02-22
+## [1.1.0]
 
 - Use modern ActiveRecord migration options for better Rails 7.x compatibility
 - Ensure Github actions CI can run and uses Postgres appropriately
 - Add examples for more sophisticated use cases
 - Implement `#prune!` on storage backends
 - Reformat all code using [standard](https://github.com/standardrb/standard) instead of wetransfer_style as it is both more relaxed and more modern
 
-## [1.0.0] - 2023-10-27
+## 1.0.0
 
 - Release 1.0 as the API can be considered stable and the gem has been in production for years
 
-## [0.2.0] - 2022-04-08
+## [0.2.0]
 
 - Allow setting the global default TTL for the cached responses
 - Allow customisation of the request key computation (so that the client can decide whether to include/exclude `Authorization` and the like)
 - Extract the error response generating apps into separate modules, to make them easier to override
 
-## [0.1.0] - 2021-10-14
+## 0.1.0
 
 - Initial release