This has definitely been useful as a way of determining interest – based on reaction so far it seems like the book premise is good. I decided to remove the per

This has definitely been useful as a way of determining interest – based on reaction so far it seems like the book premise is good. I decided to remove the percentage for now since it was an arbitrary number. I'm not even sure what will make the book 100% if I plan to go back and add/revise chapters as js libraries are updated/released. Using semantic version numbers and a roadmap would be better. I'll add a list of completed/started/planned chapters to the book description soon, which will be much more useful than a percentage.