Unstructured-IO updates to 0.27.16 limit image pixels to 500,000,000.

The official source reports this update: 0.27.16. This release rolls up all changes since 0.27.10; versions 0.27.11–0.27.15 were not published to PyPI individually. Fixes Reject images whose frames decode to too many pixels instead of exhausting memory. partition_image() measures an image before partitioning and raises UnprocessableEntityError above IMAGE_MAX_TOTAL_PIXELS (default 500,000,000); with hi_res , every frame is charged. (0.27.16 — 0242693 , #4520 ) Reject spreadsheets whose worksheets span too many cells instead of exhausting memory.