[+] New feature: Document autosave

[+] New feature: Show or hide Affinity V3 welcome screen

[!] Fixed missing version number in update check dialog

This version implements automated document saving on a customizable schedule from 1 - 99 minutes. To prevent workflow interruptions, the save feature detects active user input and delays the file save action until it detects several seconds no user activity.

Also featured is a streamlined function to enable or disable the Welcome Screen in Affinity V3. This removes the need to hunt down the correct XML file in Affinity's AppData folder and editing it manually.