[dekhn]

I agree entirely that maintainers should be more careful with breaking changes. Few things annoy me more than getting 99% of thew way into a project and then getting an error simply because somebody moved a function from one place to the other.

This is really just another instance of CADT, imho.

I can't help with books- and IMHO, this is why books are obsolete for internet technology. I used to be a big OReilly fan, but at some point, the books were worse than useless because none of the examples would work 10 years later. Now, examples don't work 1 year later!