Near Shadings: Auto-save

An auto-save mechanism has been implemented in the shadings scene in order to prevent the loss of work if PVsyst crashes.

Here is how it works :

•one auto-save file is kept for each variant,

•it is saved every 5 minutes,

•the file is located in your current workspace Shadings folder, and is named "__auto__" followed by the current variant name,

•files are kept until you exit PVsyst after a clean run,

•files can be recovered by clicking on "File -> Read scene", they are listed with other scenes.