Merge pull request #75 from hiradimir/master

add optimistic locking option

Author: RobinBuschmann

lib/interfaces/IDefineOptions.ts

@@ -2,4 +2,9 @@ import {DefineOptions} from "sequelize";
 
 export interface IDefineOptions extends DefineOptions<any> {
   modelName?: string;
+
+  /**
+   * To enable optimistic locking.
+   */
+  version?: boolean;
 }

lib/models/Model.d.ts

@@ -466,6 +466,11 @@ export declare class Model<T> extends Hooks {
    */
   deletedAt?: Date|any;
 
+  /**
+   * version number automatically created by sequelize if table options.version is true
+   */
+  version?: number;
+
   /**
    * Returns true if this instance has not yet been persisted to the database
    */