One-thumb slider

[etx121]

Before submitting a feature request

• I have searched the existing issues to ensure this feature hasn't been requested already.
• I am using the latest version of the library.

Feature description

Hi,

I was wondering if we could be able to choose between a one-thumb and two-thumb slider?
I like that your component is fast, but I don't want to deal with multiple sliders depending on if it is a one-thumb or two-thumb sliders.