Perspec 1.0.0.0

• Automatically detect corners and place the selection polygon
• Handle EXIF rotation data for PNGs
• Add support for Windows
• Selection polygon
  • Add edge dragging to adjust selection boundaries
  • Add grid lines for better visibility
• Add "Select Files" view with a button and drag-and-drop support for selecting images
• Add new Save BW Smooth export option that converts the image to anti-aliased black & white
• Upgrade GUI framework Brillo to latest version
  • Improved app design
  • Highlight buttons on hover
  • Hand cursor when hovering over buttons
  • Load different default fonts for each OS
• CLI
  • Add --backend flag to select used image manipulation backend
  • Remove obsolete commands test and fastfix
• Use FlatCV
  for computer vision and image manipulation tasks