Update changelog

CHANGELOG.md

@@ -2,6 +2,26 @@
 
 ## Unreleased
 
+### New features
+
+#### Added inverse modifier for buttons on dark backgrounds
+
+You can now style buttons on dark backgrounds to have a white background colour by adding the `govuk-button--inverse` class.
+
+This change was made in [pull request #3556: Add inverse button styles](https://github.com/alphagov/govuk-frontend/pull/3556).
+
+#### Added inverse modifier for breadcrumbs on dark backgrounds
+
+You can now style breadcrumbs on dark backgrounds to use white text, links and arrows by adding the `govuk-breadcrumbs--inverse` class.
+
+This change was made in [pull request #3774: Add inverse breadcrumb and back link modifiers and styles](https://github.com/alphagov/govuk-frontend/pull/3774).
+
+#### Added inverse modifier for back links on dark backgrounds
+
+You can now style back links on dark backgrounds to have a white link and arrow colour by adding the `govuk-back-link--inverse` class.
+
+This change was made in [pull request #3774: Add inverse breadcrumb and back link modifiers and styles](https://github.com/alphagov/govuk-frontend/pull/3774).
+
 ### Fixes
 
 We’ve made fixes to GOV.UK Frontend in the following pull requests: