[gthumb] Created tag 3.8.3

[Paolo Bacchilega <paobac src gnome org>]

The unsigned tag '3.8.3' was created.

Tagger: Paolo Bacchilega <paobac src gnome org>
Date: 1577127029 +0100

    version 3.8.3

Changes since the last tag '3.8.2':

Paolo Bacchilega (9):
      jpeg loader: crash when the original size is too big for a cairo surface
      image viewer: do not try to paint surfaces with invalid size
      cairo scale: do not create surfaces with an invalid size
      removed HAVE_EXIV2_020 because we require at least version 0.21
      Fixed run-time errors if exiv2 is not used
      realize the window to get the screen size at start-up
      default size: try to display 6 columns of thumbnails
      app icons: name the app icons with the application id
      updated for version 3.8.3