v2.2.4

[NastyBoget]

• Show page division and page numbers in the HTML output representation (API usage, return_format="html").
• Make imports from dedoc library faster.
• Added tutorial how to add a new language to dedoc (not finished entirely).
• Added additional page_id metadata for multi-page nodes (structure_type="tree" in API, TreeConstructor in the library).
• Updated OCR and orientation/columns classification benchmarks.
• Minor edits of README.md.
• Fixed empty cells handling in CSVReader.
• Fixed bounding boxes extraction for text in tables for PdfTabbyReader.

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This discussion was created from the release v2.2.4.