Include U+20BF (Bitcoin Sign)

[GraoMelo]

Dear developers,

could you add currency symbols:

Unicode:

Bitcoin Sign

Name	Number
Number Unicode	U+20BF
------	------
HTML Code	: '&#8383';
------	------
CSS code:	'\20BF'

Unicode version 10: https://www.unicode.org/charts/PDF/Unicode-10.0/U100-20A0.pdf

General information: https://util.unicode.org/UnicodeJsps/character.jsp?a=20BF

Technical information: https://www.unicode.org/L2/L2015/15229-bitcoin-sign.pdf