title: Shiny: set a limit for the input period length using dateRangeInput()
body: <p>I would like to somehow limit the input time frame from <code>dateRangeInput()</code> in Shiny. What I mean is that whenever the user selects, for example, 2 dates that are more than 3 months apart, Shiny wont let them use it as input and asks them to select 3 months or less. I couldn't use <code>min</code> and <code>max</code> parameters because i need to limit the period length and not specific dates.</p>
  
  <p>I have tried searching for related questions but couldnt find one that solves this issue.</p>
  
  <p>Thanks!</p>