I was wondering since Bootstrap 4 now in beta stage and as they clam
we’re done breaking all your stuff until our next major version (v5)
https://blog.getbootstrap.com/2017/08/10/bootstrap-4-beta/
is there any plans to migrate to Bootstrap 4 especially since it is a major rewrite of almost the entire Bootstrap
http://getbootstrap.com/docs/4.0/migration/