Jeremy Singer-Vine 850fd45b02 Add {line,char}_dir{,rotated,render} params ...

... and in the process, deeply rewrite the text extraction code to be
more flexible with regards to reading/writing non top-to-bottom,
left-to-right text.

Major kudos and thanks to @afriedman412 for the initial idea, initial
prototype, and inspiration for these new features.

Breaking change: word["direction"] is no longer {1,-1} but instead
{"ltr","rtl","ttb","btt"}.

Deprecated: Text-extraction parameters `horizontal_ltr` and
`vertical_ttb`.

2024-03-06 20:53:03 -05:00

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