To simplify things and help our users to be more productive, we have archived the current forum and focus our efforts on helping developers on Stack Overflow. You can post new questions on Stack Overflow or join our Discord channel.
for Vaadin 7.1 there is the amazing cheat sheet, which we really like a lot (So much we printed it as a big poster and put it on the wall in our office). Are there plans to create an updated version for Vaadin 8?