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Changelog

[1.2.0] - 2026-04-09

Added

  • AztecCode(data, gs1=True) emits FLG(0) Reader Initialisation as the first encoded character, per ISO 24778 §7 and GS1 General Specifications §5.5.3. Industrial scanners (Zebra, Honeywell, DataLogic) prefix decoded output with ]z3 when FLG(0) is present, enabling GS1 AI routing in WMS/ERP systems.
  • AztecCode.from_preset(data, preset, gs1=True) forwards the GS1 flag.
  • find_optimal_sequence(data, gs1=True) and find_suitable_matrix_size(data, gs1=True) expose the flag for advanced users.
  • CONFORMANCE.md — evidence report documenting GS1 2027 compliance and fixture results.

[1.1.0] - 2026-04-09

Added

  • Batch encoding API: encode_batch(payloads, output, workers, preset) with ordered results and multiprocessing support.
  • Preset profiles: boarding_pass, transit_ticket, event_entry, gs1_label via AztecCode.from_preset(...).
  • CLI bulk mode: --input, --input-format, --workers, --out-dir, --name-template, --preset.
  • CLI benchmark mode: --benchmark, --benchmark-count, --benchmark-workers with throughput metrics.
  • GS1 payload builder: GS1Element, build_gs1_payload, GROUP_SEPARATOR.
  • Production compatibility matrix script (scripts/decoder_matrix.py) with markdown report output.
  • Compatibility fixture tests against real-world payloads.

Changed

  • Development Status classifier promoted to 5 - Production/Stable.
  • PyPI keywords and classifiers expanded for discoverability.

[1.0.0] - 2026-04-05

Fixed

  • CRLF encoding coverage and regressions aligned with upstream issue #5.
  • Error-correction capacity sizing bug fixed for worst-case stuffing payloads (upstream issue #7).

Added

  • Package split into aztec_py with modern pyproject.toml packaging.
  • SVG output support based on upstream PR #6 by Zazzik1.
  • CLI entry point (aztec) and python -m aztec_py runner.
  • PDF output (AztecCode.pdf() and extension-aware save() behavior).
  • AztecRune support for 0..255 values.
  • Optional decode helper (aztec_py.decode) backed by python-zxing.
  • Property-based tests with Hypothesis.
  • Input validation for public API boundaries.

Changed

  • Project metadata updated for fork lineage visibility.
  • Added explicit attribution artifacts: LICENSE.upstream and CONTRIBUTORS.md.