IrfanView 4.22

* Added History list for Random slideshow ("No file repeat" removed)
* New multipage images menu: Create Multipage PDF
* Option to save changes on exit (Properties->Misc 1, default: OFF)
* TIF loading bugs fixed (Thanks to j00ru//vx)
* New command line option: /filelist=txtfile; Examples:
* New Contact Sheet options: Set custom paper size and units
* Options to set start parameters for external editors (see Help file/button)
* External editor names are showed in the menu text
* New Panorama dialog option: Add space between images
* Browsing: if CTRL + number (0-9) pressed, the file index increases by number
* New wallpaper menu: Stretched - proportional
* New Slideshow dialog option: Remember last file index on exit
* New option to show DDS alpha color (Properties->Misc. 1)
* Support for WSQ format (Wavelet Scaler Quantization, PlugIn by Steven Venable)
* New Thumbnail option: Use full file path for sorting (if subfolders loaded)