but… trailing commas are ok in TOML

• edit 1: I now see the caveat of an inline table - though trailing commas are not that useful for an inline list of values anyways
• edit 2: they’re changing this for TOML 1.1: https://github.com/toml-lang/toml/issues/516 .

The double square bracket is for an array of tables. A regular array looks “normal”: https://toml.io/en/v1.0.0#array