Having fixed this bug, I found another. It seems the node modules "qs" (<https://www…

Having fixed this bug, I found another. It seems the node modules "qs" (https://www.npmjs.com/package/qs) supports multiple arrayFormats. The one used by default in the micropub-helper is "indices", which serializes to array values like this: array[0]=val0&array[1]=val1. This syntax is not supported for Micropub. If you use the arrayFormat "brackets", serializes to the more familiar array[]=val0&array[]=val1.