Hi folks,
Currently if you want to use Tooltips/Popovers and Dropdown, you should include Popper.js before Bootstrap and I think it's a huge drawback that you cannot just include Bootstrap and all the provided plugins doesn't work.
So a simple solution should be to provide a bundled release of Bootstrap with Popper.js included.
The size of our minified JS will increase of 16kb see my test :

Is it a good solution for you ? Or should we continue to provide a release without Popper.js ?
/CC @mdo