v0.3.0
New: Grayscale / B&W
- Grayscale mode (luminosity conversion)
- True black & white with adjustable threshold (0-255)
New: Invert Colors
- Full negative effect
- Preserves RGBA alpha channel
Other
- Version check on startup (alerts when new release is available)
- PyPI metadata improved (keywords, project URLs, better classifiers)
- All features now preserve EXIF and ICC profile metadata