In a4c76e2f ("Performance improvement - cache the branch objects instead
of looking them up over and over", 2019-06-25) introduced via PR #1286
the filename conflict on case insensitive filesystems:
doc/release-notes/Next.md
vs
doc/release-notes/NEXT.md
The later name is the one already existing and what is used throughout
the history, where as the former one wasn't used at all before.
Merge the two files and remove the wrong doc/release-notes/Next.md one.
While I am alrady modifying the file, add the reference to the pull requests
to the changelog entries.
siprbaum
cca9298bc6