Completed PersonalData validator.

Renamed HistoryRepository
Updated Report generator to use the PersonalData column type.
Fixed error with unserializing existing PersonalData objects in update command.

Model/PersonalData.php

@@ -443,18 +443,15 @@ public function getRetainFor(): string
     /**
      * Set RetainFor.
      *
-     * @param \DateInterval $retainFor
+     * @param string $retainFor
      *
-     * @return PersonalData
+     * @return \SpecShaper\GdprBundle\Model\PersonalData
+     * @throws \Exception
      */
     public function setRetainFor(string $retainFor): PersonalData
     {
         $interval = new \DateInterval($retainFor);
-
-        if (0 == $interval->format('s')) {
-             throw new GdprException("RetainFor option period ". $retainFor . " is not a valid \DateTimeInterface duration string");
-        }
-
+
         $this->retainFor = $interval;
 
         return $this;