4.1.3 Pre-release

HERE BE DRAGONS, this is a testing release

New features:

• New icon (thanks, @jimmac!)
• Mac dark mode support
• Update to Qt 5.12 where available
• Moved to an organization repo (also, thanks to @KAMiKAZOW for the URL correction!)
• Fedora Silverblue is now listed as an option for Workstation (#166)
• minor UI tweaks (#194)
• Mac version on GitHub should be signed now (the Windows version should not, though)

Bug fixes:

• Uninstaller now lists the right info (Thank you, @cyfrost ! #183)
• Fixed crashing with AArch64 images (#170)
• Mac font size is now right (#93)
• Mac info now includes the version (#180)
• When using the delayed write option, the app now longer seems to have stopped (#148)