message: Show two year transformation in storybook.
diff: import { action } from '@storybook/addon-actions'
  import { boolean } from '@storybook/addon-knobs'
  import { storiesOf } from '@storybook/react'
  -import React from 'react'
  +import React, { useState } from 'react'
  import { DateField } from './DateField'
  import { DateInput } from './DateInput'
  @@ -9,9 +9,21 @@ import { DateInput } from './DateInput'
  const todayMinus10 = new Date(new Date().setDate(new Date().getDate() - 10))
  storiesOf('Components|DateField', module)
  - .add('default', () => (
  - <DateField name='date' value={new Date()} onChange={action('changed')} disabled={boolean('disabled', false)} />
  - ))
  + .add('default', () => {
  + const [value, setValue] = useState<Date>()
  +
  + const handleChange = (selectedDate: Date) => setValue(selectedDate)
  +
  + return (
  + <DateField
  + name='date'
  + value={value}
  + onChange={handleChange}
  + disabled={boolean('disabled', false)}
  + transformTwoYearDigit={boolean('transformTwoYearDigit', false)}
  + />
  + )
  + })
  .add('min/max date', () => (
  <DateField
  name='date'
  