title: How to change day-format (M > Mo, F > Fr...) in Date/month pickers of Vuetify
body: <p>I try to change format of days in <b>Date/month picker</b> component. At the moment list of days as "<b>M,T,W,T,F,S,S</b>", but I need "<b>Mo,Tu,We,Th,Fr,Sa,Su</b>". In API I can see that necessary parameter called "day-format" and its value is <b>null</b> (default).
  Can anybody please explain: is it possible to change this format of days?</p>
  
  <p>Here is the API of Vuetify:
  <a href="https://vuetifyjs.com/en/components/date-pickers#date-month-pickers" rel="nofollow noreferrer">https://vuetifyjs.com/en/components/date-pickers#date-month-pickers</a></p>