Give option to give formatter arguments

[peterjaap]

For example;

randomNumber($nbDigits = NULL, $strict = false) // 79907610

We should be able to set $nbDigits and $strict somehow in our yaml definition.

[peterjaap]

Closed by #16

[peterjaap]

For example;

creditmemo:
  sales_creditmemo:
    columns:
      customer_note:
        formatter:
          name: sentence
      transaction_id:
        formatter:
          name: randomNumber
          nbDigits: 8