* Consolidate multiple different HTML/XML/RSS libraries to use the Cheerio stack
* Remove unused deps
* Move dev dependencies to correct section
* Pin versions where missing
* chore: Add the SPDX information to each file
Add copyright and licensing information as defined in version 3.0 of
the REUSE Specification.
* tweak format
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Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>