added UUID to toString() method
extracted base path to constructor
setup new path for testing
added filename filter to include .json files only
renamed NoteService implementation to better express the intend
added list merge
new test
added some test prototypes
added public readNoteEntity method and some refactoring
added public cloneElement() method
added new test class for NoteEntity
added new timestamp fields to NoteEntity including tests
added some test
added update of lastSavedOn after write