Add support for <sup> formatting element
This is based of 81c9377c7d
Related: https://git.pleroma.social/pleroma/pleroma/issues/1191
			
			
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					 2 changed files with 6 additions and 1 deletions
				
			
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			@ -81,6 +81,11 @@
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      text-align: sub;
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    }
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    sup {
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      font-size: smaller;
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      vertical-align: supper;
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    }
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    ul, ol {
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      margin-left: 1em;
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			@ -39,7 +39,7 @@ class Sanitize
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    end
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    MASTODON_STRICT ||= freeze_config(
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      elements: %w(p br span a abbr del pre blockquote code b strong u sub i em h1 h2 h3 h4 h5 ul ol li),
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      elements: %w(p br span a abbr del pre blockquote code b strong u sub sup i em h1 h2 h3 h4 h5 ul ol li),
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      attributes: {
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        'a'          => %w(href rel class title),
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