From 643f5482a408b372b6da84c7859cdfa3fd4cb0b8 Mon Sep 17 00:00:00 2001
From: Mark Otto <markdotto@gmail.com>
Date: Fri, 24 Nov 2017 17:00:21 -0800
Subject: [PATCH] add migration note

---
 docs/4.0/migration.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/docs/4.0/migration.md b/docs/4.0/migration.md
index b12c733628..c1d72e8827 100644
--- a/docs/4.0/migration.md
+++ b/docs/4.0/migration.md
@@ -11,6 +11,7 @@ toc: true
 While Beta 2 saw the bulk of our breaking changes during the beta phase, but we still have a few that needed to be addressed in the Beta 3 release. These changes apply if you're updating to Beta 3 from Beta 2 or any older version of Bootstrap.
 
 - Removed the unused `$thumbnail-transition` variable. We weren't transitioning anything, so it was just extra code.
+- Updated selector for input-based button groups. Instead of `[data-toggle="buttons"] { }` for style and behavior, we use the `data` attribute just for JS behaviors and rely on a new `.btn-group-toggle` class for styling.
 
 ## Beta 2 changes
 
-- 
GitLab