Property to prevent removing Tippy instance from DOM (hide instead of remove)

[oskarkrawczyk]

Problem

Let's say a tippy contains form fields (inputs, selects), when you open up a tippy and force it to render inside of a form, once hidden the DOM of the tippy along with all fields is removed, hence submitting the form will lack data.

Solution

A property to force tippy not to remove the instance from DOM, and just hide it instead.