Add release note about pipditherpng
@@ -67,6 +67,9 @@ Some of the ancillary tools are modified to work on Python 3.
to add a `pHYs` chunk, which allows the intended pixel size to be
specified.
+`priditherpng` command line tool standardised and
+converted to Python 3.
+
Better errors messages when you write the wrong number of rows.
