Release Spot 2.4.3

* NEWS, configure.ac, doc/org/setup.org: Update.

NEWS

-New in spot 2.4.2.dev (not yet released)
+New in spot 2.4.3 (2017-12-19)
 
-  Bug fixes:
+  Bugs fixed:
 
   - couvreur99_new() leaked memory when processing TωA that allocate
     states.
 
   - Some mismatched placement-new/delete reported by ASAN were fixed.
 
+  - Static compilation was broken on MinGW.
+
+  - Execution of Jupyter notebooks from the testsuite failed with
+    recent versions of Python.
+
+  - Fix some warnings triggered by the development version of g++.
+
 New in spot 2.4.2 (2017-11-07)
 
   Tools:

configure.ac

@@ -21,7 +21,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 AC_PREREQ([2.61])
-AC_INIT([spot], [2.4.2.dev], [spot@lrde.epita.fr])
+AC_INIT([spot], [2.4.3], [spot@lrde.epita.fr])
 AC_CONFIG_AUX_DIR([tools])
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([1.11 gnu tar-ustar color-tests parallel-tests])

doc/org/setup.org

 #+OPTIONS: H:2 num:nil toc:t html-postamble:nil
 #+EMAIL: spot@lrde.epita.fr
 #+HTML_LINK_HOME: index.html
-#+MACRO: SPOTVERSION 2.4.2
-#+MACRO: LASTRELEASE 2.4.2
-#+MACRO: LASTTARBALL [[http://www.lrde.epita.fr/dload/spot/spot-2.4.2.tar.gz][=spot-2.4.2.tar.gz=]]
-#+MACRO: LASTNEWS [[https://gitlab.lrde.epita.fr/spot/spot/blob/spot-2-4-2/NEWS][summary of the changes]]
-#+MACRO: LASTDATE 2017-11-07
+#+MACRO: SPOTVERSION 2.4.3
+#+MACRO: LASTRELEASE 2.4.3
+#+MACRO: LASTTARBALL [[http://www.lrde.epita.fr/dload/spot/spot-2.4.3.tar.gz][=spot-2.4.3.tar.gz=]]
+#+MACRO: LASTNEWS [[https://gitlab.lrde.epita.fr/spot/spot/blob/spot-2-4-3/NEWS][summary of the changes]]
+#+MACRO: LASTDATE 2017-12-19