Sprinkles new migration system

migrtions.java

/*
	pros:
		- 	Simple and little code

	cons:
		- 	What happens when an @Check annotation is removed form Note.class model?
			Not intuitive that that column will be dropped and recreated
*/
void onCreate() {
	Sprinkles s = Sprinkles.init(this);

	s.registerModel(Note.class)
}

/*
	pros:
		- 	No suprises

	cons:
		- 	Some duplication of code as the column name and type is declared in the model class
*/
void onCreate() {
	Sprinkles s = Sprinkles.init(this);

	s.migrate(Migration.createTable("Notes",
		new Migrator() {
			void onMigrate(CreateTableMigration m) {
				m.addColumn("id", long.class).constraints(Constraint.primaryKey(), Constraint.autoincrement());
				m.addColumn("title", String.class).constraints(Constraint.notNull());
				m.addColumn("color", Color.class)
				m.addColumn("tag_id", long.class).constraints(Constraint.foriegnKey("Tags","id"))
			}
		}
	));
}

Does #2 mean that we have to specify our columns both in the class that extends Model, as well as in onMigrate()?

yes

The model will only act as a mapping against the underlying columns