• UI: Options: Add Backup Export/Import.
• UI: Options: Add "System Language" option.
• UI: Highlight focused tool buttons.
• UI: IconCache: Check "./icons/" existence once on startup.
• Installer: Portable: Create "Data/" directory with user permissions.
• Installer: Windows 7: Check for installed KB4474419.
• Installer: Check for VC Redist x86 only in 32-bit version.
• Installer: Skip OS compatibility checks on upgrade.

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