Change function to es6 syntax

#33 - Change function to es6 syntax

Toggling sticky behavior

#31 - Toggling sticky behavior, thanks @egadstar !

fix Sticky not being fixed when calling window.scrollTo()

#32 - fixed Sticky not being fixed when calling window.scrollTo()

Compatible with React@15 and [email protected]

Now Sticky support React@15 as well!

Thank @roderickhsiao

Introduce State Change Handling

In many situations, we need to do something according to sticky status. Previously, we had contextual class to help us know sticky status, now we have a callback function! Thank you @eligolding.

https://github.com/yahoo/react-stickynode#handling-state-change

Fix Sticky recalculation issue

Fix that Sticky doesn't recalculate dimension when it's parent gets updated.

Fix some issues

Fixed the issue that Sticky is in FIXED status and its height gets changed, it will be always FIXED.

Introduce active class

We introduced a prop activeClass which will set to Sticky class when it is in fixed status. By default, the value of the prop is active. This feature provide flexibility to users to do more their own stuffs.

@fender

Support responsive

In some situation, for example, responsive design, Sticky will be set as display:none. In this case, Sticky should be disable for better performance.

Thanks @testerez.

#9

Bug fix

Sticky wrapper will keep the width as that of its content to avoid the width being changed by Sticky state change. This release fixed incorrect calculation of the width.