We want to thank everyone who has supported us and/or participated in writing this book. During the months of work, a lot of people kept asking about our progress, which worked as a real stimulant to finish the book. We'd like to thank all the people at Apress, Sofia Marchant in particular, for their support and making sure the book stayed on track. Furthermore, we thank Tom Welsh for putting up with us non-native English speakers and the many "keep it simple" remarks, and also Benjamin Berg for the many style and grammar suggestions. Last, we'd like to thank Steve Anglin for allowing this book to see the light and intervening whenever necessary.

We also want to thank all our colleagues at JTeam for putting up with us during the writing of this book, especially Leonard Wolters for providing us with the time to write it. Furthermore, we thank Jelmer Kuperus and Tom van Zummeren for providing valuable content for the book.

Last, we'd all like to thank our friends and families for putting up with us and supporting us.

Bram, Uri, and Roald