XPO - Web API and OData V4 支持

XPO - Web API and OData V4 支持：

       https://community.devexpress.com/blogs/xpo/archive/2018/07/05/xpo-web-api-and-odata-v4-support.aspx

       https://community.devexpress.com/blogs/xpo/archive/2018/05/21/xpo-free-of-charge-in-v18-1.aspx