+ Major new feature:
+ * --quilt=gbp, --quilt=dpm, --quilt=unpacked: Introduce facility for
+ split view (dgit/mainiainer view), to improve compatibility with some
+ other workflow tools.
+
+ New checks and improved behaviours:
+ * When running dpkg-buildpackage, cope if user specified -g or -G.
+ * dgit sbuild: check that the set of .changes files found is as we
+ expect, before calling mergechanges. Re:#800060.
+ * dgit sbuild: Rename the used-up .changes files to `.inmulti' to
+ avoid accidental use of the wrong one (by software, or by users).
+ * dgit sbuild: Check that the binary .changes file doesn't contain a
+ .dsc.
+ * Introduce --rm-old-changes to delete previous builds' changes files.
+ * Remove any pre-existing _source.changes file before building source,
+ as a safety check.
+ * No longer tolerate a multitude of .changes files when doing push.
+ Instead, insist on a single one. Closes:#800110.
+ * dgit sbuild no longer deletes extranious .changes files; instead
+ we rely on --rm-old-changes, or failing that, fail early.
+ * When doing quilt linearisation, treat upstream .gitignores not
+ in the toplevel the same way we treat ones in the toplevel.
+ * When automatically generating quilt patch, honour GIT_COMMITTER_DATE
+ for filename creation (makes filename deterministic in test suite).
+ * New --overwrite option, replaces need to for user to use
+ git merge -s ours. Closes:#838718.
+ * When generating quilt patches from git commits, make patches that
+ look quite like git-format-patch output (rather than strange things
+ based on an obselete interpretation of DEP-3).
+ * When generating quilt patches from git commits, honour (and strip)
+ any Gbp-Pq headers (that we understand).
+ * Several dgit-generated commits now have slightly better annotations
+ from dgit about what it was doing.
+ * Make --quilt=gbp the default for dgit gbp-build.
+ * 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.
+ * dgit-repos-policy-debian.: fix git-cat-file-handling with multiple
+ taints in db (!).
+
+ Documentation:
+ * Document the dgit-distro.DISTRO.quilt-mode config setting.
+ * Clarify the --clean= options' documentation. Closes:#800054.
+ * Discourage use of the --PROGRAM:OPTION escape hatch. (Apropos
+ of various bug reports including #800060 and #833025.)
+ * Document the expected form of HEAD for each --quilt= mode.
+