0.3.0

• Cache generated placeholder data uris

0.2.0

• Allow clearing all placeholders at once
• Use Imagick to improve alpha channel accuracy

0.1.2

• Check for supported file formats
• Regenerate placeholder when replacing single image

0.1.1

• Allow generating missing placeholders for existing images
• Allow re-generating placeholders for all existing images
• Sanitize requested placeholder size

0.1.0

• Initial release