Update changelog

CHANGELOG.md

@@ -4,6 +4,17 @@
 
 💥 Breaking changes:
 
+- Update date input component  
+
+  Rely on `classes` (`govuk-input--width-2` and `govuk-input--width-4`) instead
+ of item names to set the width of input items.
+
+  To migrate you must add the `govuk-input--width-2` (for day and month) or the `govuk-input--width-4`  class (for year) to your date input items.
+
+  If you're using the Nunjucks macros you can also rely on the default date input items by removing the items entirely from the arguments object.
+
+  ([PR #857](https://github.com/alphagov/govuk-frontend/pull/857))
+
 - Pull Request Title goes here
 
   Description goes here (optional)
@@ -14,6 +25,14 @@
 
 🆕 New features:
 
+- Update date input component  
+
+  Allow the `name` and `id` attributes to be passed individually for each input item.
+
+  Add default (day, month, year) date input items if no items are being specified
+
+  ([PR #857](https://github.com/alphagov/govuk-frontend/pull/857))
+
 - Pull Request Title goes here
 
   Description goes here (optional)