std.json broke backward compatibility, starting with
https://github.com/D-Programming-Language/phobos/commit/1958c95666b0241d669d282806e4f724fbb37caf.
There's even no notice in the changelog of the breakage, which is quite
obvious by inspecting the diff.
This is a serious matter because it broke production code. Was there a
reason for the breakage? We should make sure breaking changes are
avoided or get a lot of scrutiny if they are really necessary.
I wonder how we can improve the process to avoid such issues in the future.
Andrei
