Bug: body is not sent if any other parameters exist

[wolever]

Because of this line, in filterListHelper:

for (let i = 0; i < take; i++) {
  if (fliterFn(context[i], i, context)) {
    ret = ret + options.fn(context[i]);
  }
}

The take parameter should be incremented if the filter matches, otherwise:

            {{#filterList operationParams "op=>op.inBody" "1"}}

Will bail on the first parameter, even if it isn't in the body.