Prepare 3.9.90

NEWS

+GNOME Sudoku 3.9.90
+===================
+
+* Fix running uninstalled
+* Fix NumberBox events configuration with latest pygobject
+* Game no longer disappears when opening "print multiple sudokus" in fullscreen
+* Reduce the width of the About dialog
+* Don't use deprecated GObject.timeout_add_seconds
+* Use /usr/bin/python instead of /usr/bin/env/python
+* Fix some broken links in user help
+* Translation updates
+
 gnome-sudoku 3.8.0
 ==================
 

configure.ac

-AC_INIT(gnome-sudoku, 3.8.0)
+AC_INIT(gnome-sudoku, 3.9.90)
 AM_INIT_AUTOMAKE([1.11 no-dist-gzip dist-xz foreign])
 AM_SILENT_RULES([yes])
 AM_MAINTAINER_MODE([enable])