Pass version to application (see #103)

src/application.py

@@ -14,11 +14,12 @@ class Application(Gtk.Application):
     ID = 'xyz.suruatoel.mcg'
     DOMAIN = 'mcg'
 
-    def __init__(self):
+    def __init__(self, version):
         super().__init__(application_id=Application.ID,
                          flags=Gio.ApplicationFlags.FLAGS_NONE)
         self._window = None
         self._info_dialog = None
+        self._version = version
         self._verbosity = logging.WARNING
         self.set_accels_for_action('window.close', ['<primary>q'])
         self.set_accels_for_action('win.show-help-overlay', ['<primary>k'])
@@ -52,7 +53,7 @@ class Application(Gtk.Application):
         self._info_dialog = Adw.AboutDialog()
         self._info_dialog.set_application_icon("xyz.suruatoel.mcg")
         self._info_dialog.set_application_name("CoverGrid")
-        self._info_dialog.set_version("3.2.1")
+        self._info_dialog.set_version(self._version)
         self._info_dialog.set_comments(
             """CoverGrid is a client for the Music Player Daemon, focusing on \
 albums instead of single tracks.""")

src/main.py

@@ -4,5 +4,5 @@ from .application import Application
 
 
 def main(version):
-    app = Application()
+    app = Application(version)
     return app.run(sys.argv)