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Wiley Exploring Beaglebone epub unsupported character entities do not render

Four character entities unsupported in HTML, XML, and XHTML do not render on readers, and are used hundreds to thousands of times in epub of Exploring Beaglebone by Wiley, including option flags! Could we please have an epub with these codes replaced by standard characters or supported character entities:
Unicode dec Count Char Description
$ $ 119 $ dollar sign (currency symbol)
    839 hair space (space separator)
‐ ‐ 2792 - hyphen (dash punctuation)
➢ ➢ 80 three-D top-lighted rightwards arrowhead
[stats created by pipeline joined with list of supported character entities]
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