source-sans
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Add blackboard bold glyphs
These are mostly used in math, including ℤ, ℚ, and ℝ.
The double-struck character blocks actually include all upper/lower letters and digits, and it'd be nice if the Source fonts included these.
@clarcharr are you able to contribute to the development of artwork for these glyphs?
@pauldhunt unfortunately not; this isn't an urgent matter by any means, but I figured that I'd post here in case other users feel that these glyphs are useful to have
I think it would be a pretty 𝕔𝕠𝕠𝕝 addition. Here is some reference material I found: http://xahlee.info/comp/unicode_math_font.html