Update version numbering from 1.6 to 2.0.
diff --git a/Doc/lib/libundoc.tex b/Doc/lib/libundoc.tex
index fac635a..28be620 100644
--- a/Doc/lib/libundoc.tex
+++ b/Doc/lib/libundoc.tex
@@ -40,7 +40,7 @@
 \begin{description}
 \item[\module{dircmp}]
 --- Class to build directory diff tools on (may become a demo or tool).
-\deprecated{1.6}{The \refmodule{filecmp} module will replace
+\deprecated{2.0}{The \refmodule{filecmp} module will replace
 \module{dircmp}.}
 
 \item[\module{bdb}]