I love your work, love Feathers and everything you do for the community.
Forgive my ignorance, not sure where can I report bugs. I ran into a small issue this morning while checking out my project with beta6.
feathers.controls.supportClasses.BaseScrollContainer.hx lines 1153 and 1164. If there's a scrollBarFactory defined in the code for any of the axes, and that factory does not have a destroy() function (not created with DisplayObjectFactory), these lines throw NPE's while trying to remove (destroy) the scrollbars.
Now it's relatively easy to fix in my code, I just wanted to give you a headsup.