Return callback for pre walk

[lukasstankiewicz]

Hi,
i am using yours library for a while and it working great but i really miss return callback for pre walk strategy. For now i can only interact with element on entering tree node but a lot of times i need to make actions or returning from node.

I have create a fork of your project add added additional callback for it ( check out the commit lukasstankiewicz@6e151ae )

It would be awesome if you could pull this functionality to this repo :)

thanks,
looking forward to hearing from you

[joaonuno]

Hi,
I agree that is a useful feature. I'll look into it and when I find the time will eventually add it. I'm on tight schedule currently so I'll keep this issue open for when I find the time.

Thank you for your suggestion.