Thank you for the clarification.

And congratulations on the book - has been very good thus far!
Versions 2 and 3 of this MEAP made some changes to the chapters which were provided in version 1 (chapters 1-3).

As an aid to readers who might have already read these chapters is it possible to somehow give an indication where major changes to updated chapters were made? Typos and minor restructuring etc. need not be described, but it would be good to know of the significant changes.

Obviously this applies to future MEAP versions, and to all MEAPs not just this particular book.