Preparation for v1.3.7

HiFLEx_UserManual.tex

@@ -33,7 +33,7 @@
   moredelim=**[is][\color{red}]{@}{@},
 }
 % To change: titele; date; https://github.com/ronnyerrmann/HiFLEx/archive
-\title{User Manual for Data Reduction using the HiFLEx package\\ version: v1.3.6}
+\title{User Manual for Data Reduction using the HiFLEx package\\ version: v1.3.7}
 \date{May, 2021}
 \author{Ronny Errmann, EXOhSPEC team\\ Physics, Astronomy and Maths, University of Hertfordshire}
 
@@ -103,6 +103,12 @@ \section{Changelog (recently)}
 \label{Section:Changelog_new}
 Please find the changes of older versions in Chapter~\ref{Section:Changelog_old}.
 
+\subsection*{v1.3.7}
+\begin{itemize}\setlength\itemsep{0em}
+  \item Removed the splitting into long and short exposure for wavelength solution, so the GUI is a bit smaller and might load faster.
+  \item Spellcheck in Manual and outputs.
+\end{itemize}
+
 \subsection*{v1.3.6}
 \begin{itemize}\setlength\itemsep{0em}
   \item New parameter \verb|split_wavelength_solutions_at| to create wavelength solution when several chips are combined into one image.
@@ -1348,7 +1354,7 @@ \subsection{Necessary files}
 
 \noindent The Necessary python and configuration files can be loaded from github (adjust the version to the latest version by checking \url{https://github.com/ronnyerrmann/HiFLEx/releases}):
 \begin{lstlisting}[style=base]
-wget https://github.com/ronnyerrmann/HiFLEx/archive/v1.3.5.tar.gz
+wget https://github.com/ronnyerrmann/HiFLEx/archive/v1.3.7.tar.gz
 tar -xzvf v*.tar.gz
 \end{lstlisting}
 Alternatively, the following command downloads the latest version of the files: