Release v2.1.0

Release v2.0.8

Release v2.0.7

Release v2.0.3

Release v2.0.2

Release v2.0.1

Release v2.0.0

Release v1.4.0

feat: preserve text and image order based on Y-coordinates

- Extract Y-coordinates from PDF.js transform matrices
- Sort content items by vertical position within each page
- Return ordered content parts for optimal AI consumption
- Text and images interleaved as they appear in document
- Automatic line grouping for text on same Y-coordinate
- Improved error handling with descriptive messages

BREAKING CHANGE: Content parts now include individual text blocks
instead of concatenated page text when images are enabled

Resolves user requirement for exact document ordering like:
page 1 [text, image, text, image, image, text]