When I met a friend in a pub recently and I told him I was writing a client library for csvbase, he did laugh a bit. "Can't people just use curl?" It's true. On csvbase, you can just curl any table url and get a csv file. Through the magic of HTTP, this web-page: becomes this csv file inside curl: [For details of how that trick works, see an older blog post] That barely qualifies as an API, it's just HTTP. So what possible use could a client library be? And of course client libraries add ment...