- Core base code on Bootstrap 4
- Documentation code base written from scratch
- Speed optimizations
- Class changes : .card-block to .card-body
- .navbar-toggleable-* to .navbar-expand-*
- .hidden-*-down to .d-none .d-*-block
- .hidden-*-up to .d-*-none
- .checkbox to .form-check
- .radio to .form-check
- more class changes here:https://medium.com/@lukaszholeczek/how-to-upgrade-bootstrap-4-alpha-6-to-bootstrap-4-beta-d43b4210f2a3
- Bug fixes for responsive devices
- Small changes for components
dragosct10