- Multiple bugfixe linked to query fragments

- Added a new SearchRequest package to handle search request efficiently

src/Query/Fragment.php

@@ -10,6 +10,6 @@ abstract class Fragment {
 
     protected function renderSegments(array $segments, string $glue = " ") : string
     {
-        return implode($glue, array_filter($segments));
+        return implode($glue, array_filter($segments, function($i) { return ! is_null($i) && $i !== false && $i !== ""; }));
     }
 }