There is no entry in the change log that mentions the introduction of typeswitch union cases.
There is also no entry that mentions that we now allow forwards references to global variables.
And there is no mention that cycles among global variables etc are now detected as a dynamic error rather than a static error.
(In reply to comment #1)
> There is also no entry that mentions that we now allow forwards references
> to global variables.
I think this entry covers it, doesn't it?
* Relaxed constraints on module imports in 4.12 Module Import to allow modules to reference each other without restriction and to remove restrictions on forward references to global variables.
I believe this is fixed in the current checked-in document. Please reopen if I missed something.