add stub entry about addition of new utility classes to the migration guide

diff --git a/docs/migration.md b/docs/migration.md
index 04fde5ea502a31255d58e60f9d398b95d996df6d..d530becb1c57a1cd29dcccf015ec344b9f1d4ed8 100644 (file)
--- a/docs/migration.md
+++ b/docs/migration.md
@@ -38,6 +38,7 @@ We've added new components and changed some existing ones. Here are the new or u
 | New navbar | Replaces the previous navbar with a new, simpler component. |
 | New progress bars | Replaces the old `.progress` `<div>` with a real `<progress>` element. |
 | New table variants | |
+| New utility classes | |
 
 ## What's removed
 The following components have been removed in v4.0.0.