Tree doesn't update on external change

[eladbs]

Hi,

First, many thanks for this great component suite!
I use the tree component to view hierarchy data. I have a filter that changes the tree structure that is passed to the Tree component but the tree doesn't update.
I created a much simpler example which is self explained.

Please have a look and let me know if I missed something or is this actually a bug.

Thanks!!

I'm submitting a ... (check one with "x")

[X ] bug report
[ ] feature request
[ ] support request => Please do not submit support request here, instead see http://forum.primefaces.org/viewforum.php?f=57

Plunkr Case (Bug Reports)
https://plnkr.co/edit/l1Q7PHIcuXplxKwjZ1V0

Current behavior
Tree component doesn't render external updates to tree data.
Example: A button to change the "expanded" value of the root element. Click on the button to expand/collapse the tree doesn't work.

Expected behavior
Tree should re-render the tree structure on external updates.

Minimal reproduction of the problem with instructions
Look at Plunkr above.

[eladbs]

Aaaannndddd.... Now I found that there is a PR that should fix this:
#297

I would appreciate if you could approve the PR.
Thanks!

[mertsincan]

I'll review PR #297 and get back to you.

[eladbs]

Thanks!