Add a starter for the next "What's New" document.

Doc/whatsnew/whatsnew23.tex

+\documentclass{howto}
+\title{What's New in Python 2.3}
+
+% We'll let Andrew claim ownership when he's ready.  ;-)
+%\author{A.M. Kuchling}
+%\authoraddress{\email{akuchlin@mems-exchange.org}}
+
+\begin{document}
+\maketitle
+\tableofcontents
+
+\section{Introduction \label{intro}}
+
+
+
+
+%======================================================================
+\section{Acknowledgements \label{acks}}
+
+
+\end{document}