Node.js 的 ORM 框架，​Sequelize 2.0.0 正式发布！

Sequelize.js 提供对 MySQL，MariaDB，SQLite 和 PostgreSQL 数据库的简单访问，通过映射数据库条目到对象，或者对象到数据库条目。简而言之，就是 ORM（Object-Relational-Mapper）。Sequelize.js 完全是使用 JavaScript 编写，适用于 Node.js 的环境。

Sequelize 2.0.0 正式发布，此版本现已提供下载（ZIP），相比 Sequelize 2.0.0 RC8 更新内容如下：

• [BUG] 修复 field 支持 increment 和 decrement 相关问题

• [FEATURE/BUG] Raw queries always return all results (including affected rows etc). This means you should change all promise listeners on sequelize.query to use .spread instead of .then, unless you are passing a query type.

• [BUG] Support for composite primary keys in upsert #3065

• [BUG] Support for field in upsert

• [FEATURE] 支持在 MySQL 中设置一个初始自动增长选项 #3076

• [FEATURE] 测试覆盖 Node.js 0.12 和 io.js 1.x

向后兼容改进：

• The default query type for sequelize.query is now RAW - this means that two arguments (results and metadata) will be returned by default and you should use .spread

• The 4th argument to sequelize.query has been deprecated in favor of options.replacements