Status Updates From Progressive Web Apps

Not sure why, but chapter 10 (Streaming Data) has been a real challenge for me to get through.

Been an informative read so far, but two minor gripes-- first few chapters feel a bit repetitive (pretty sure this is deliberate to reinforce learning), and references to code listings in chapter 5 get off track by one (fairly certain this is an accident). Oh well, hopefully that'll get fixed in next edition.