remove requirejs, use webpack instead
convert core/Utils class to es6
update core/Timer to es6
use fat arrow in core/Timer
convert Core.coffee to es6
convert orchestrator to es6
convert Editor to es6
convert editor/EditorControls to es6
convert editor/EditorMenu to es6
convert editor/Exporter to es6
convert editor/PropertiesEditor to es6
update example files
convert editor/Property to es6
convert editor/PropertyBase to es6
convert editor/PropertyColor to es6
convert editor/PropertyNumber to es6
convert editor/PropertyTween to es6
convert editor/SelectionManager to es6
convert editor/UndoManager to es6
replace some require with import from