* New tag format (for dgit view) archive/debian/VERSION.
* Before committing to push, check that .dsc and .changes correspond.
Closes:#800060.
+ * Better error message if non-split-brain patch stack no longer
+ applies (due to new upstream version, or user messing with it).
+ Closes:#833025.
Infrastructure:
* Better error handling in dgit-repos-policy-debian.