Marker v2

[VikParuchuri]

Basically a full rewrite!

• Extracts and saves images
• Improved table formatting
• Better markdown wrapping
• Better reading order on complex docs
• Improved OCR engine with more language options
• Simple pip package install (no more required system dependencies), so can be used easily on Windows
• Can be used commercially (pymupdf and layoutlmv3 dependencies removed)

It takes ~2x as long to run now, but seems like a decent tradeoff.

See README for installation and usage.