stop hanging function assignment at =

[matthargett]

0.14 introduced a feature where it will hang at the = instead of the argument list for many kinds of constructs. There's a particular scenario where this negatively impacts readability:

exports.createResource = function(
        glitch: (Input) -> Thenable<Value>,
        hasInput: (Input) -> Key,
        config: Config?
): Pleasing<Input, Key, Value>
        config = config or {}
        local pleasing
        pleasing = {
                clear = function(): ()
                        entries[pleasing] = nil
                end,
        }
        return pleasing
end

currently gets transformed into this, which in the integration case triggers a cascade of indents