Okay! The fonts hack will take a bit more time, I have to think about how to properly handle the FontConfig settings (which I guess are used by the browser), but the rest looks good

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There's even a funny
ALLOW_USER_FONT = false
setting in the default reader config, so, who knows, they may indeed have been listening to our pleas

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And yeah, the default fonts indeed have custom TT hinting instructions now, yay'

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