Add TreeFactory and tests
Add RichTree and tests, and start using it
Add dev dependency for angular-mocks
Update Makefile and README
Fix RichTreeFactory and tests
Use tree-cache for simple navigation
Refactor some events into EventBridge, update tests
Fix all features
Fix issue in append
Remove TreeView
Update README and Makefile
Fix cache issue
Update TreeFactory to make it more readable
Code review
Merge pull request #34 from marmelab/tree_factory

[RFR] Rewrite TreeView