“Mat Howie” should be either @mathowie or Matt Haughey.
Link for #4 is broken, has a trailing doublequote.
Link 1 — I don’t think his complaint is that the business is unpredictable, I think it’s that potential buyers don’t share his sense of how much his product is worth. (Supposedly due to the low price point established by other developers.) Feedback from users who find his app just barely worth $10 hurts his feelings, and he’s reluctant to let economy of scale make up for the ding to his self-esteem with $$.
I wrote something similar to csvkit last year, but it uses JSON and handle other formats: https://github.com/rcaputo/app-pipefilter
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