0.1.1

• Add error message boxes
• Improve performance when editing a large image
• Improve flood fill performance
• Fix visual glitches during window creation
• Fix crash when loading palette-based PNG files (automatically converted to 32-bit for now)
• Add dedicated save as-button and display file name in window title
• Add about dialog
• Active selection is now visible in the preview widget
• Compress undo/redo-steps for much lower memory usage
• Add distinct blend modes replace and alpha blend