We are getting closer to Boostrap 4 and I really love what we are getting with the first alpha version.
- Improved grid system
- Opt-in flexbox support is here. Nice.
- Dropped wells, thumbnails, and panels for cards.
- Consolidated all our HTML resets into a new module, Reboot. Much cleaner.
- Dropped IE8 support and moved to rem and em units. Finally REM units and IE8 free. I know there will be still projects with IE8 requirements, but the amount of projects is getting less and less :)
- Improved auto-placement of tooltips and popovers. They are using Tether, have been using that for projects for some time now. GREAT!