Allow boolean values for column[i].searchable
Allow boolean values for column[i].searchable

When dt Request is sent as application/json instead of multipart/form-data
and when in ColumnDef boolean values are used the search does not work. 
 
(Angular 6 HTTPClient for example)

might affect https://github.com/yajra/laravel-datatables/issues/1789
yajra/laravel-datatables