added README note about semantic versioning

README.md

@@ -160,11 +160,13 @@ Pagy is a fresh project and your help would be great. If you like it, you have a
 - Submit your translation if your language is missing from the [dictionary files](https://github.com/ddnexus/pagy/blob/master/lib/locales)
 - Write a Tutorial or a "How To" topic
 
-## Branches and Pull Requests
+## Versioning, Branches and Pull Requests
 
-`master` is the latest rubygem-published release (plus changes that don't affect the actual gem behavior, e.g. doc, tests). You should use it as the base branch for pull requests, because it will not be force-rebased.
+Pagy follows the [Semantic Versioning 2.0.0](https://semver.org/). Please, check the [Changelog](https://github.com/ddnexus/pagy/blob/master/CHANGELOG.md) for breaking changes introduced by mayor versions.
 
-`dev` is the development branch that is kept rebased on top of `master`, so expect it to be force-rebased (i.e. do not use it as the base for your commits). Use `dev` as a preview for trying the new code that will be merged in the next release, but please, don't use it as the base branch for pull requests.
+The `master` branch is the latest rubygem-published release (plus changes that don't affect the actual gem behavior, e.g. doc, tests). You should use it as the base branch for pull requests, because it will not be force-rebased.
+
+The `dev` branch is kept rebased on top of `master`, so expect it to be force-rebased (i.e. do not use it as the base for your commits). Use `dev` as a preview for trying the new code that will be merged in the next release, but please, don't use it as the base branch for pull requests.
 
 ## Credits