Import of working code base

Signed-off-by: martin f. krafft <madduck@madduck.net>
diff --git a/mergers/list/base.py b/mergers/list/base.py
new file mode 100644
index 0000000..a7bbc17
--- /dev/null
+++ b/mergers/list/base.py
@@ -0,0 +1,16 @@
+#
+# -*- coding: utf-8 -*-
+#
+# This file is part of reclass (http://github.com/madduck/reclass)
+#
+# Copyright © 2007–13 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+from mergers.base import BaseMerger
+
+class BaseListMerger(BaseMerger):
+
+    def merge(self, first, second):
+        first = [first] if not isinstance(first, list) else first[:]
+        second = [second] if not isinstance(second, list) else second[:]
+        return self._combine(first, second)