* update for gulp 4.0.0
* added an ability to set custom css classes for Node's field and value
* v5.9.8-beta
* wip
* wip
* wip
* wip
* wip
* wip
* cleanup
* reverted ./dist/ files
* cleanup
* reverted package-lock.json
* updated onClassName signature
* recursive node class name update on change
* add/remove css classes on node
* example fix
* merged remote
* removed yarn.lock
* changes get reflected on both sides of the diff view in example 20
* refactored and cleaned up example 20