• [Windows] Add MainWindow_Shown handler so the driver installation prompt appears (#113)
• [Windows] Don't access UI controls in child thread when flashing (#114)
• [Windows] Add STM32 (winusb) and USBasp (libusb) to drivers.txt (#122)
• [MacOS] Filter out more non-Caterina devices (#118)
• Tidy up flasher list messages and readme (#119)
• MCU box improvements (#115)