SQLiteUpdatable

##Overview SQLiteUpdatable exposes an interface for updating rows from the database associated with the model.

####Parameters setters: [Setter] - value to column mapping. All new values will be set in the appropriate rows.

relationshipSetters: [RelationshipSetterSetter] - Model to Relationship column mapping. All new relationships will be set in the appropriate mapping tables.

####Update All Updates all rows in the table associated with the model.
Executes on current thread and on background thread respectively.

static func updateAll(setters: [Setter], relationshipSetters: [RelationshipSetter]) throws -> Void
static func updateAllInBackground(setters: [Setter], relationshipSetters: [RelationshipSetter], completion: Completion?)

####Update Updates rows that satisfy the query in the table associated with the model. Executes on current thread and on background thread respectively.

static func update(query: QueryType, setters: [Setter], relationshipSetters: [RelationshipSetter]) throws -> Void
static func updateInBackground(query: QueryType, setters: [Setter], relationshipSetters: [RelationshipSetter], completion: Completion?)

---

public protocol SQLiteUpdatable {
    static func updateAll(setters: [Setter], relationshipSetters: [RelationshipSetter]) throws -> Void
    static func updateAllInBackground(setters: [Setter], relationshipSetters: [RelationshipSetter], completion: Completion?)
    
    static func update(query: QueryType, setters: [Setter], relationshipSetters: [RelationshipSetter]) throws -> Void
    static func updateInBackground(query: QueryType, setters: [Setter], relationshipSetters: [RelationshipSetter], completion: Completion?)
}