Merge pull request #1 from jitendrajp/laravel8

jarektkaczyk#27 Fix Parameter Grouping with Laravel 7.x

src/Builder.php

@@ -124,7 +124,7 @@ public function select($columns = ['*'])
      */
     public function where($column, $operator = null, $value = null, $boolean = 'and')
     {
-        if (!in_array(strtolower($operator), $this->operators, true)) {
+        if (!$column instanceof Closure && !in_array(strtolower($operator), $this->operators, true)) {
             list($value, $operator) = [$operator, '='];
         }