message: use Typography for day label in CalendarHeader
diff: @@ -37,7 +37,13 @@ export const CalendarHeader = (props) => {
  <div className={classes.daysHeader}>
  {utils.getWeekdays().map(day => (
  - <div key={day} className={classes.dayLabel}> {day} </div>
  + <Typography
  + key={day}
  + type="caption"
  + className={classes.dayLabel}
  + >
  + {day}
  + </Typography>
  ))}
  </div>
  </div>
  @@ -75,7 +81,6 @@ const styles = theme => ({
  dayLabel: {
  width: 36,
  margin: '0 2px',
  - fontSize: 13,
  textAlign: 'center',
  color: theme.palette.text.hint,
  },
  