Can we add a option for vertical carousel

[waqas19921]

Can we add a option for vertical carousel, currently i have made some changes and its working for vertical but the coefficient thing in utils is very very tricky, i am unable to control the opacity and z index in case of greater than 5 items.

[mrmuhammadali]

We are working on supporting more than 5 items. You can open a PR and I'll review it for supporting vertical carousel.