Vladimir Panteleev:
I agree, I am also surprised that 2.066 was released despite the regressions.
There is an apparently endless stream of regressions, I have found another today (https://issues.dlang.org/show_bug.cgi?id=13321 ). I think D is not yet at the stage of its development where it can hope to fix all the regressions. So if you try to wait for all regressions to be fixed, you never ship a compiler version, and this has serious disadvantages. So better to be a little more practical for now. 2.066 has took ages to come out, it was overdue. I hope 2.067 will come out much quicker.
Bye, bearophile