4.16.0

- Launch applications reparenting them to init
- Bump gtk minimum version to 3.22.0
- bump glib (and gio, gthread, etc) minimum to 2.50.0
- Translation Updates:
  Albanian, Amharic, Arabic, Armenian (Armenia), Basque, Bulgarian,
  Catalan, Chinese (China), Chinese (Hong Kong), Chinese (Taiwan),
  Croatian, Danish, Dutch, Eastern Armenian, English (Australia),
  English (Canada), English (United Kingdom), Estonian, Finnish,
  French, Galician, German, Greek, Hebrew, Hungarian, Icelandic,
  Interlingue, Italian, Japanese, Kazakh, Korean, Lithuanian, Malay,
  Norwegian Bokmål, Norwegian Nynorsk, Occitan (post 1500), Polish,
  Portuguese, Portuguese (Brazil), Romanian, Russian, Serbian,
  Slovenian, Spanish, Swedish, Telugu, Turkish, Ukrainian, Uyghur,
  Vietnamese