Initial import from Docker volume

modules/sale_history/__init__.py

@@ -0,0 +1,21 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+from trytond.pool import Pool
+
+from . import sale
+
+__all__ = ['register']
+
+
+def register():
+    Pool.register(
+        sale.Sale,
+        sale.Line,
+        sale.LineTax,
+        module='sale_history', type_='model')
+    Pool.register(
+        sale.Subscription,
+        sale.SubscriptionLine,
+        module='sale_history', type_='model',
+        depends=['sale_subscription'])