v1.12.1

• Updated packager (I forgot in 1.12.0)
• Linux: Fixed incorrect metadata in .desktop launcher causing some desktop environments (notably KDE) to behave strangely
• Linux: Flatpak version now detects drag-and-drop-related permission issues and suggests how to fix them. This lets us greatly reduce our flatpak permissions (no more --filesystem=home) without risking silent breakage.