record-usage

Regarding the object deltas, I think there are a couple of ways to do it.

I've found a couple of different libraries for diffing objects:
  https://github.com/SQiShER/java-object-diff
  http://javers.org/documentation
  
These both seem kind of overkill.

Lets say we have a Person class as follows

class Person {

  String name;
  int age;
  String hairColour;
  
  Person(String name, int age, String hairColour) {
    this.name = name;
    this.age = age;
    this.hairColour = hairColour;
  }
}
  
I propose a basic API as follows:

Record record = ds.record.getRecord('simpsons/2');
Person person = record.get(Person.class);

System.out.println(person.name); 
// Marge
System.out.println(person.age); 
// 30

person.age = 40;
record.set(person); 
// R|P|simpsons/2|2|age|N40+

person.age = 50;
person.hairColour = "Green";
record.set(person);
// R|U|simpsons/2|4|{"name":"Marge","age":50,"hairColour":"Green"}+
// as opposed to two patch statements