title: numeric and date fields highlighting in elastic search
body: <p>hope I could get a solution to this classical problem. </p>
  
  <p>Is there any way that I could index or query elastic search numeric and date types to be searched and highlighted. The data gets searched, but cannot be highlighted. I have seen lot jiras raised in git hub on the same, but without any solution </p>
  
  <p>My requirement is, I should be able to search, highlight and perform range and aggregation operation on the same. Could it be resolved using anything like "multi_filed" or "fields"(replaces multi_field as its deprecated in elastic search 2.x version). </p>
  
  <p>Any help is highly appreciated. Thanks in advance</p>