Added crl.CertificateList.issuer
diff --git a/asn1crypto/crl.py b/asn1crypto/crl.py
index 4f73648..b83d99e 100644
--- a/asn1crypto/crl.py
+++ b/asn1crypto/crl.py
@@ -431,6 +431,15 @@
         return self._authority_information_access_value
 
     @property
+    def issuer(self):
+        """
+        :return:
+            An asn1crypto.x509.Name object for the issuer of the CRL
+        """
+
+        return self['tbs_cert_list']['issuer']
+
+    @property
     def authority_key_identifier(self):
         """
         :return: