* Adding Lineage node expansion to show columns .
* Adding support for getting columns of expanded node.
* Refactoring.
* Reafctoring and style changes.
* Minor changes
* Changing prop type.
* minor style changes.
* Added support for Lineage Incremental loading.
* Added loadNode Handler
* Added position prop to loadNode Handler.
* Adding changes to get down and up stream data incrementally.
* Adding checks for leaf nodes part-1
* minor change
* Changed file extenstion from tsx to ts as its only contains types.
* Adding checks for leafnodes
* Removed onClick from node text.
* Changed depth value to 3
* Minor fix
* Added micro interaction for loading nodes.
