PureJsImage v0.5.0

Added

• Added first-party ICO decoding with validated multi-image selection,
  zero-copy embedded PNG entries, common 1/4/8/16/24/32-bit DIB layouts,
  one-bit AND masks, partial alpha, and the Windows-compatible legacy
  all-zero-alpha fallback.
• Added a committed, checksum-pinned ICO corpus plus correctness-gated isolated
  benchmarks for metadata, embedded PNG and DIB decoding, masks, alpha, resize,
  PNG output, and JPEG output.
• Expanded first-party TIFF decoding with BigTIFF 64-bit IFDs and offsets,
  padded tiled layouts, 16-bit integer channels, CMYK and subsampled YCbCr
  conversion, CCITT Modified Huffman and Group 3 fax, and old/new JPEG-in-TIFF.