Docu update.

AUTHORS

 Uwe Schulzweida, <uwe.schulzweida AT mpimet.mpg.de>, is the main author.
 Ralf Mueller, <ralf.mueller AT mpimet.mpg.de>
-Luis Kornblueh, <luis.kornblueh AT mpimet.mpg.de>
+Oliver Heidmann, <oliver.heidmann AT mpimet.mpg.de>
 Cedrick Ansorge, <cedrick.ansorge AT mpimet.mpg.de>
+Luis Kornblueh, <luis.kornblueh AT mpimet.mpg.de>
 Ralf Quast, <ralf.quast AT brockmann-consult.de>

doc/tex/cdo.tex

@@ -198,7 +198,7 @@ keepaspectratio]{cdo_libdep.pdf}}%
 \end{picture}
 
 \begin{flushright}
-\large \textbf{Climate Data Operators \\ Version 1.9.3 \\ February 2018}
+\large \textbf{Climate Data Operators \\ Version 1.9.4 \\ April 2018}
 \end{flushright}
 
 \vfill

doc/tex/cdoprog.tex

@@ -14,7 +14,7 @@
 \put(0,0.0){\line(1,0){3.95}}
 \end{picture}
 \begin{flushright}
-{\small{Climate Data Operators \\ Version 1.9.3 \\ February 2018}}
+{\small{Climate Data Operators \\ Version 1.9.4 \\ April 2018}}
 \end{flushright}
 
 \vspace*{0mm}