Feature Request: Quick Return sticky headers

[oyeanuj]

Hi folks! This library looks great - thank you for open-sourcing it!

Since it call itself the 'most powerful' sticky library :), I wanted to check if it currently supports or plan to support 'quick-return' sticky headers (that disappear on scroll down and re-appear and stick on scroll-up)? Examples can be seen here - https://github.com/KyleAMathews/react-headroom

Thank you!

[dbarbalato]

see reply to #97