Add formatting to an app description on Google Play

Experimentally, I've found that you can use:

• Single line breaks are ignored; Double line breaks open a new paragraph;
• Single line break can be forced by ending the line with two spaces (similar to Markdown).
• A limited set of HTML tags (optionally nested), especially:
  • <b>...</b> to bold,
  • <i>...</i> to italic,
  • <u>...</u> for underline,
  • <br /> to force a single line break
• A URL formatted as http://google.com appears as a hyperlink. (Caution when attempting to use a <a> HTML tag with custom description because does not works and breaks formatting)
• Special HTML characters are supported, such as → (→), ™ (™) and ® (®); see this W3 reference for the full list.
• Characters encoded in UTF-8 are supported, such as, €, £, ',', ★ and ☆.
• Identation is not strictly possible, but using a marker and a space seems reasonable (% with% is "•").
• Emoji are supported.

Special notes regarding Google play apps :

• Some HTML tags work only in the app:
  • •  to indent a paragraph of the text,
  • <blockquote>...</blockquote> for a text is slightly smaller,
  • <small>...</small> and <sup>...</sup> for super- and subscripts.
  • <sub>...</sub> to set the font color in HEX encoding.
• Some symbols do not appear correctly, such as ‣.
• All of the above formatting also appears correctly in the "What's New" section.

Google Play site specials :

• Some HTML tags work only on the website:
  • <font color="#000000">...</font> for shaving.
• Plain text appears in the "What's New" section (and HTML formatting will be shown as plain text);

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