pqiv-2.7

This is the release of pqiv 2.7.

New for package managers:

• pqiv now includes and installs by default a pqiv.desktop file with a list of supported MimeTypes, using the emblem-photos standard icon which should be shipped with every GTK based system

Other than that, packages/packaging scripts should not require any changes.

New features:

• Added new action set_interpolation_quality to change interpolation/filter
  mode
• pqiv now by default uses nearest interpolation for small images
• Added actions and key bindings to control animation playback speed
• Added a general archive backend for reading images from archives
• Added a new action goto_earlier_file() to return to the image that was
  shown before the current one
• Added a new action set_cursor_auto_hide() to automatically hide the pointer
  when it is not moved for some time
• Support an actions section in the configuration file for default actions
• Create and install a desktop file for pqiv during install
• Disable GTK's transparent scaling on HiDpi monitors

Bug fixes:

• Work around bug #67, poppler bug #96884
• Fixed window decoration toggling with --transparent-background
• Do not print warnings when running with Wayland
• Fix --action parameters that require the main window to be visible
• Fix action chains containing file movement (wait until the file changed)
• libav backend: Fix display of videos with non-square pixel size
• Fix GTK2 compiling (Added missing GTK2 keysym def)
• cbx/comics backend: Fix free-on-unload bug (led to a segfault)
• Replace GTK 3.22's deprecated function calls with modern ones