[gtk-doc] release: bump versions and back to development

[Stefan Sauer <stefkost src gnome org>]

commit eda89d50da65f12153f04ff26b5d2757ffda060c
Author: Stefan Sauer <ensonic users sf net>
Date:   Sat Mar 24 16:16:56 2018 +0100

    release: bump versions and back to development

 HACKING                     |    4 ++--
 NEWS                        |    5 +++++
 configure.ac                |    2 +-
 help/manual/C/index.docbook |    6 ++++++
 4 files changed, 14 insertions(+), 3 deletions(-)
---
diff --git a/HACKING b/HACKING
index 0d6a2aa..9ae0d5c 100644
--- a/HACKING
+++ b/HACKING
@@ -18,8 +18,8 @@ Releasing
 
 http://live.gnome.org/MaintainersCorner/Releasing
 
-export OLD_VER=1.26
-export NEW_VER=1.27
+export OLD_VER=1.27
+export NEW_VER=1.28
 export OLD_VER_TAG=$(echo ${OLD_VER} | tr '.' '_')
 export NEW_VER_TAG=$(echo ${NEW_VER} | tr '.' '_')
 
diff --git a/NEWS b/NEWS
index d8fc4f9..60d5111 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+GTK-Doc 1.28.1  (Mar 24 2018)
+==============
+
+Development
+
 GTK-Doc 1.28  (Mar 24 2018)
 ==============
 
diff --git a/configure.ac b/configure.ac
index 05500b9..14dee8c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ AC_PREREQ([2.63])
 
 dnl We're using a two digit number for the releases and
 dnl a three digit number for the development version
-m4_define(gtk_doc_version, 1.28)
+m4_define(gtk_doc_version, 1.28.1)
 
 AC_INIT([gtk-doc],[gtk_doc_version],[http://bugzilla.gnome.org/enter_bug.cgi?product=gtk-doc],[gtk-doc])
 
diff --git a/help/manual/C/index.docbook b/help/manual/C/index.docbook
index 0980f3f..9686128 100644
--- a/help/manual/C/index.docbook
+++ b/help/manual/C/index.docbook
@@ -81,6 +81,12 @@
 
     <revhistory>
       <revision>
+         <revnumber>1.28.1</revnumber>
+         <date>24 Mar 2018</date>
+         <authorinitials>ss</authorinitials>
+         <revremark>development</revremark>
+      </revision>
+      <revision>
          <revnumber>1.28</revnumber>
          <date>24 Mar 2018</date>
          <authorinitials>ss</authorinitials>