Updating tree-node and linked-list-tree imports to use CollapseTree

Hello, I'm working on updating to the latest beta on npm (4) from commit 600fed454. I initially encountered an error that 'ember-table/utils/tree-node' module could not be found. I come to find that utils/tree-node no longer exists, and has/is being refactored into CollapseTree along with LinkedListTree. I don't know if CollapseTree can be swapped in directly for LinkedListTree, but I tried that via import LinkedListTree from 'ember-table/-private/collapse-tree'; However, I can't find how what I would do for TreeNode i.e. utils/tree-node. I guess it is worth noting, there does seem to still be a test that refences tree-node here: https://github.com/Addepar/ember-table/blob/8519064e2b7c6d596fb42ad7708e6caf6cf9c84e/tests/helpers/tree-generator.js

I also went out on a limb and replaced all references to table-tree with ember-table, but also don't know if that's correct or not.

Any and all help very much appreciated!

I'm on ember 2.13.3

Compare the removed ember-table/utils/tree-node and table-tree imports with ember-table/-private/collapse-tree and LinkedListTree usage described in the issue. Start with tests/helpers/tree-generator.js, then verify that the updated imports work on Ember 2.13.3 and that the referenced tree tests still pass.