Remove 'type' from json serialization of records

Author: danmichaelo

src/BibliographicRecord.php

@@ -13,7 +13,7 @@ class BibliographicRecord extends Record
     /**
      * @var array List of properties to be included when serializing the record using the `toArray()` method.
      */
-    public $properties = ['id', 'type', 'isbns', 'title', 'subjects'];
+    public $properties = ['id', 'isbns', 'title', 'subjects'];
 
     /**
      * Get the descriptive cataloging form value from LDR/18. Returns any of

src/HoldingsRecord.php

@@ -15,7 +15,7 @@ class HoldingsRecord extends Record
     /**
      * @var array List of properties to be included when serializing the record using the `toArray()` method.
      */
-    public $properties = ['id', 'type', 'location'];
+    public $properties = ['id', 'location'];
 
     /*************************************************************************
      * Helper methods for specific fields. Each of these are supported by

src/Record.php

@@ -27,7 +27,7 @@ class Record implements \JsonSerializable
     /**
      * @var array List of properties to be included when serializing the record using the `toArray()` method.
      */
-    public $properties = ['id', 'type'];
+    public $properties = ['id'];
 
     /**
      * Record constructor.