package: prepare for 2.3

* NEWS.md: .
* configure.ac: .

Author: akimd

NEWS.md

@@ -5,7 +5,8 @@ This file describes user visible changes in the course of the development of
 Vcsn, in reverse chronological order.  On occasions, significant changes in
 the internal API may also be documented.
 
-# Vcsn 2.3 (2016-07-??)
+
+# Vcsn 2.3 (2016-07-08)
 
 About four hundred commits and five months after Vcsn 2.2, we are proud to
 announce the release of Vcsn 2.3, code-named "the tuple release"!

configure.ac

@@ -15,7 +15,7 @@ m4_pattern_forbid([^(AX|BOOST|TC|URBI|VCSN)_])
 
 AC_PREREQ([2.69])
 
-AC_INIT([Vcsn], [2.2a],
+AC_INIT([Vcsn], [2.3],
         [[email protected]], [],
         [http://vcsn.lrde.epita.fr/])
 AC_CONFIG_AUX_DIR([build-aux/bin])