function padRight(subject, length, pad) {
    var subjectString = coerceToString(subject);
    var lengthInt = isNil(length) ? 0 : clipNumber(toInteger(length), 0, MAX_SAFE_INTEGER);
    var padString = coerceToString(pad, ' ');

    if (lengthInt <= subjectString.length) {
      return subjectString;
    }

    return subjectString + buildPadding(padString, lengthInt - subjectString.length);
  }
Pads `subject` from right to a new `length`.

@function padRight
@static
@since 1.0.0
@memberOf Manipulate
@param {string} [subject=''] The string to pad.
@param {int} [length=0] The length to right pad the string. No changes are made if `length` is less than `subject.length`.
@param {string} [pad=' '] The string to be used for padding.
@return {string} Returns the right padded string.
@example
v.padRight('dog', 5);
// => 'dog  '

v.padRight('bird', 6, '-');
// => 'bird--'

v.padRight('cat', 6, '-=');
// => 'cat-=-'