You often want to add additional explanation about the patch,
other than the commit message itself. Place such "cover letter"
-material between the three dash lines and the diffstat.
+material between the three dash lines and the diffstat. Git-notes
+can also be inserted using the `--notes` option.
Do not attach the patch as a MIME attachment, compressed or not.
Do not let your e-mail client send quoted-printable. Do not let