Vaadin 7 to 8 Migration

Hi,

How to Migrate vaadin 7.6.6 ivy project to vaadin 8.4.1 ivy project,

https://vaadin.com/docs/v8/framework/migration/migrating-to-vaadin8.html

https://vaadin.com/blog/upgrading-to-vaadin-framework-8-part-1-of-2-

https://vaadin.com/blog/upgrading-to-vaadin-framework-8-part-2-of-2-

thank u Ronny Edler