Add x-out-of-boundaries attribute to popover

[khanilov]

• components: PopperContent
• reactstrap version ^8.4.1
• import method es
• react version ^16.8.6
• bootstrap version ^4.3.1

What is happening?

Popper hide modifier has no effect on rendered popover.

What should be happening?

Add x-out-of-boundaries attribute for div rendered by ReactPopper when outOfBoundaries field in render prop argument is true.

outOfBoundaries is passed to render prop function by ReactPopper, but not used in PopperContent component.

Proofs:
https://github.com/popperjs/react-popper/blob/v1.3.6/src/Popper.js#L208-L218
https://github.com/reactstrap/reactstrap/blob/master/src/PopperContent.js#L149-L160

Motivation behind x-out-of-boundaries: https://github.com/reactstrap/reactstrap/blob/master/src/PopperContent.js#L149-L160

[sirldev]

Hi!
Is this reason of why Popover Placements left doesn't work at here?

[khanilov]

@JunHyeokHa
Hi.
Don't think so, I haven't touched placement in my PR.
Also this changes hasn't been released yet.

[sirldev]

@khanilov
Oh I see.
Thank you!!