function asciiVersionCompare(v1, v2) {
  if (v1 < v2) {
    return -1
  } else if (v1 > v2) {
    return 1
  } else {
    return 0
  }
}
Return a negative value if v1 < v2,
zero if v1 = v2, a positive value otherwise.

@param {string} v1 - First version for comparison
@param {string} v2 - Second version for comparison
@returns {number} Comparison result (-1, 0 or 1)