Rollup

[aminya]

WIP: specs call the individual files, which makes this hard.

Description of the Change

code:

• used modern import/exports
• fixed some errors with calling @ before initiating super (to prevent errors)
• used dynamic import for ignore-names (to prevent errors)
• use normal for-loop in root-drag-drop (to prevent errors)

rollup:

• Using rollup to bundle the javascript and CoffeeScript files together.

babel:

• use babel plugin to build the import/exports

Benefits

This speeds up the loading of tree-view.

Possible Drawbacks

Needs special command for registering the package

npm install
npm run build
npm ppublish
apm publish minor

Applicable Issues

[aminya]

Coffeescript does not understand dynamic import in line 335 of treeview.coffee. We can use normal require and copy the file instead.