TreeNode expand/collapse deep=true + anim=false not working

[nico]

When expanding or collapsing a TreeNode with the deep option and you also set anim=false (myRoot.expand(true, false) ) then the anim argument is not passed in subsequent calls to expand/collapse. Should be easy to fix. Just append anim in all relevant calls and let expandChildNodes recieve an anim argument.

Thx for the great work !!!

Nico