Start work on GAP 4.13

CITATION

@@ -2,23 +2,23 @@ Please use one of the following samples to cite GAP version from this installati
 
 Text:
 
-[GAP]  GAP  –  Groups,  Algorithms,  and Programming, Version 4.12dev, 
+[GAP]  GAP  –  Groups,  Algorithms,  and Programming, Version 4.13dev, 
 The GAP Group (this year), https://www.gap-system.org.
 
 HTML:
 
 <p class='BibEntry'>
 [<span class='BibKey'>GAP</span>]   
- <i class='BibTitle'>GAP – Groups, Algorithms, and Programming, Version 4.12dev</i>,
+ <i class='BibTitle'>GAP – Groups, Algorithms, and Programming, Version 4.13dev</i>,
  <span class='BibOrganization'>The GAP Group</span> (<span class='BibYear'>this year</span>),
 <span class='BibHowpublished'><a href="https://www.gap-system.org">https://www.gap-system.org</a></span>.
 </p>
 
 BibXML:
 
-<entry id="GAP4.12dev"><misc>
+<entry id="GAP4.13dev"><misc>
   <title><C>GAP</C> &ndash; <C>G</C>roups, <C>A</C>lgorithms,
-         and <C>P</C>rogramming, <C>V</C>ersion 4.12dev</title>
+         and <C>P</C>rogramming, <C>V</C>ersion 4.13dev</title>
   <howpublished><URL>https://www.gap-system.org</URL></howpublished>
   <year>this year</year>
   <key>GAP</key>
@@ -28,8 +28,8 @@ BibXML:
 
 BibTeX:
 
-@misc{ GAP4.12dev,
-  title =            {{GAP} {\textendash} {G}roups, {A}lgorithms, and {P}rogramming, {V}ersion 4.12dev},
+@misc{ GAP4.13dev,
+  title =            {{GAP} {\textendash} {G}roups, {A}lgorithms, and {P}rogramming, {V}ersion 4.13dev},
   organization =     {The GAP {G}roup},
   year =             {this year},
   howpublished =     {\href{https://www.gap-system.org}{\texttt{https://www.gap-system.org}}},
@@ -41,7 +41,7 @@ If you are not using BibTeX, here is the bibliography entry produced
 by BibTeX (in bibliography style `alpha'):
 
 \bibitem[GAP]{GAP4}
-\emph{GAP -- Groups, Algorithms, and Programming}, Version 4.12dev,
+\emph{GAP -- Groups, Algorithms, and Programming}, Version 4.13dev,
 The GAP~Group (this year), \verb+https://www.gap-system.org+.
 
 If you have (predominantly) used one or more particular GAP packages,

configure.ac

@@ -3,7 +3,7 @@ dnl Setup autoconf
 dnl
 AC_PREREQ([2.68])
 
-m4_define([gap_version], [4.12dev])
+m4_define([gap_version], [4.13dev])
 m4_define([gap_releaseday], [today])
 m4_define([gap_releaseyear], [this year])
 

doc/versiondata

@@ -4,7 +4,7 @@ Instead edit either the template file `doc/versiondata.in`, or edit
 `Makefile.rules` (which has code for generating this file), or edit
 `configure.ac` (where the value being substituted come from)
 -->
-<!ENTITY VERSIONNUMBER "4.12dev">
+<!ENTITY VERSIONNUMBER "4.13dev">
 <!ENTITY RELEASEDAY "today">
 <!ENTITY RELEASEYEAR "this year">
-<!ENTITY GAPDIRNAME "gap-4.12dev">
+<!ENTITY GAPDIRNAME "gap-4.13dev">