Practical CodeIgniter 3 - A new book coming soon

Now that I can finally see the list of chapters (I guess leanpub needed some help with load balancing yesterday), some information on setting up and using a debugger/profiler would probably be helpful to a lot of people. While debugging is not really CI-specific, the singleton in CI 3 does mean you sometimes have to dig a little to find what you're looking for.

Chapter 11 would probably be a good place for it; Knuth's adage "premature optimization is the root of all evil" comes to mind.

Bonfire

Practical CodeIgniter 3
CodeIgniter Testing Guide