Fix: #1 in release 0.1.9

Refactor file path handling to use pathlib for improved compatibility

Update version to 0.1.8 in pyproject.toml and __init__.py; enhance language detection in FormatterMD

Fixed: modify language field in FormattedResult model to be optional

Update version to 0.1.6 in pyproject.toml and __init__.py

Update README.md to document new PDF to Markdown conversion options and test coverage

Enhance FormatterMD and integration tests to support image handling in PDF to Markdown conversion

Enhance PDF to Markdown conversion by adding inline image handling in base64 and updating FormatterMD

Refactor PDF to Markdown conversion process and enhance FormatterMD to extract tables with content prop

Update README.md to reflect project name change to AlcheMark, add a tagline, and include a Google Colab example for interactive usage.

Update version to 0.1.5 and refactor package structure

Refactor project structure and update configuration files

Add configuration files for testing and packaging

Enhance testing framework by adding pytest configuration and multiple test cases for PDF to Markdown conversion, model validation, and formatter functionality. Update dependencies in pyproject.toml and uv.lock to include pytest and related tools for improved test coverage.

Enhance FormatterMD to support Markdown links and update models to include Link class; refactor element counting to return lists instead of counts.