v1.29.0- sub/superscript support, pronunciation guide …

[alopezlago]

…fixes, new exports

• Add support for subscripts and superscripts, now that YAPP emits them (#284)
• Fix an issue where punctuation after a pronunciation guide made the guide count as a buzzable word (#282)
• Normalize quotes in pronunciation guides so fancy quotes and normal quotes are treated the same
• Export functions and types around formatted text so people can see how MODAQ breaks down the question text and get accurate word indexes for buzzes
• Bump version to 1.29.0