add another note about dropdown styles changing

diff --git a/docs/migration.md b/docs/migration.md
index bbb5028b3a7f35ac17562e1b87b5d04b6fc6f12e..48f1178e02fe9a1eb9a8c7a7b1df565032e916c5 100644 (file)
--- a/docs/migration.md
+++ b/docs/migration.md
@@ -107,6 +107,7 @@ New to Bootstrap 4 is the Reboot, a new stylesheet that builds on Normalize with
 ### Dropdowns
 
 - Switched from parent selectors to singular classes for all components, modifiers, etc.
+- Simplified dropdown styles to no longer ship with upward or downward facing arrows attached to the dropdown menu.
 - Dropdowns can be built with `<div>`s or `<ul>`s now.
 - Rebuilt dropdown styles and markup to provide easy, built-in support for `<a>` and `<button>` based dropdown items.
 - Dropdown items now require `.dropdown-item`.