--- a/slides/slides02.tex	Wed Sep 27 21:29:25 2017 +0100
+++ b/slides/slides02.tex	Thu Sep 28 11:04:11 2017 +0100
@@ -1122,7 +1122,7 @@
 \lstinputlisting[numbers=none]{../progs/app52.scala}
 \end{bubble}
 \end{textblock}} 
-
+ 
 
 \end{frame}