Add Smart Quotes canonicizer#143
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Closes evllabs#112. Adds a canonicizer that replaces Unicode smart/curly quotes with plain ASCII equivalents. Word processors automatically substitute typographic quotes for straight ones, so the same phrase can tokenize differently depending on where the text came from. This normalizes that before feature extraction. Characters handled: - U+2018, U+2019, U+201B (curly single quotes, high-reversed-9) -> ' - U+201C, U+201D, U+201E, U+201F (curly double quotes, low/high-9) -> " - U+00AB, U+00BB (double angle quotation marks) -> " - U+2039, U+203A (single angle quotation marks) -> ' - U+2032, U+2033 (prime, double prime) -> ', " Shows up in the GUI. Unit tests included. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Closes #112
Adds a canonicizer that replaces Unicode smart/curly quotes with plain ASCII equivalents. Word processors automatically substitute typographic quotes for straight ones, so the same phrase can tokenize differently depending on where the text came from. This normalizes that before feature extraction.
Characters covered: curly single and double quotes (U+2018, U+2019, U+201B, U+201C, U+201D, U+201E, U+201F), double angle quotation marks (U+00AB, U+00BB), single angle quotation marks (U+2039, U+203A), and prime/double prime (U+2032, U+2033). Shows up in the GUI. Unit tests included.