Bootstrap 4 input group wrapping

[diesl]

Bootstrap 4 input groups are wrapping by default.

I think this is unintended for the spinners, but on the other side buttons or button groups can be added where wrapping might be intended behaviour.

So I am not sure what is better:

• to add a .no-wrap class to the .input-group and make it hard coded
• to make this a touchspin option and be able to decide case-by-case