Note

Medium Risk
Broader Python version support and CI matrix changes are mostly low-impact, but dependency constraint updates (notably unstructured-ingest) and new interpreter compatibility can surface runtime/packaging issues.

Overview
Adds Python 3.11 and 3.13 support by widening requires-python to >=3.11, <3.14, updating package classifiers, and bumping the unstructured[ingest] extra’s unstructured-ingest lower bound to >=1.4.0.

Expands CI to run lint and multiple unit-test jobs across Python 3.11/3.12/3.13, and moves test_json_to_html/test_json_to_markdown to ubuntu-latest runners. Also aligns static tooling by setting ruff target-version=py311 and pyright pythonVersion=3.11, bumps the library version to 0.20.0, and removes a dead pre-3.8 conditional import in unstructured/nlp/patterns.py.

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