[gnome-boxes] Created tag v3.23.4

[Felipe Borges <felipeborges src gnome org>]

The unsigned tag 'v3.23.4' was created.

Tagger: Felipe Borges <felipeborges gnome org>
Date: Wed Jan 18 12:56:30 2017 +0100

    Release 3.23.4

Changes since the last tag 'v3.23.3':

Debarshi Ray (1):
      vm-configurator: Fix typo in debug string

Dušan Kazik (1):
      Update Slovak translation

Efstathios Iosifidis (1):
      Update Greek translation

Felipe Borges (2):
      app: Withdraw system notifications on exit
      Release 3.23.4

Fábio Nogueira (1):
      Update Brazilian Portuguese translation

Jiri Grönroos (1):
      Update Finnish translation

Jordi Mas (1):
      Update Catalan translation

Rafael Fontenelle (1):
      Update Brazilian Portuguese translation

Visarion-Mingopol Alexandru (2):
      configure: Bump spice-gtk dependency to 0.32
      app: Include various help option groups