v0.6.0

Added

• EMF+ drawing payloads inside EMR_COMMENT records are included in
  emf_signature (metadata-only comments are still excluded).
• Border-based ink-mask estimation for RGB rasters; full-bleed images treat
  all pixels as content when the border is not a flat background.
• EXIF orientation is applied before raster comparison.
• Tests for EMF+ drawing vs metadata differences, mid-record truncation, and
  explicit WMF handling.

Changed

• Incomplete or corrupt EMF files no longer produce a signature; they are
  reported as truncated/corrupt instead of same/different.
• WMF parts get an explicit “not supported yet” message (extension check
  runs before EMF parsing).
• Raster decode errors are narrowed to expected failure types; Pillow
  decompression-bomb limit is tightened only for the duration of each decode.
• __version__ is read from package metadata (pyproject.toml when installed).

Fixed

• Two EMF+ charts that shared a GDI fallback but differed in EMF+ content
  could previously hash as identical.

v0.5.0

Initial packaged release: pyproject.toml, src/ layout, py.typed marker.

Added

• Type hints across the public API.
• Test suite covering raster comparison (identical, flattened-alpha, cropped/padded, aspect mismatch, undecodable), EMF signature comparison (identical, header-only diff, comment-only diff, real edit, truncated, non-EMF), and the images_match dispatch logic.
• README.md with usage, algorithm summary, and documented limitations.

Notes

• Core comparison logic (rasters via 16x16 thumbnail + ink mask + aspect guard; metafiles via drawing-record SHA-256 signature) is unchanged from the original internal script.
• WMF metafiles remain unsupported (emf_signature returns None); tracked as a known limitation, not a bug.