Docs: "auto" is not a valid tooltip placement option

[tiendq]

Currently Bootstrap only allow 4 values for placement option: top, bottom, left, right. "auto left" as explained in the document is an incorrect value and will cause error "Tether Error: You must provide an attachment".

http://v4-alpha.getbootstrap.com/components/tooltips/

[eriksendc]

Why is auto not a valid option? It would be very helpful to have it. I the meantime, the online bootstrap 4 docs are still wrong.

[karlschwaier]

Placement auto has been removed from the tooltip docs, but it is still mentioned in the popover docs.
http://v4-alpha.getbootstrap.com/components/popovers/#options

[str]

It's been a year since this issue. Was issue "auto" not suported? Or was it that the documentation is wrong? I feel many of us want he "auto" placement to be a valid flag, instead of fixing the documentation.