add list of booking lines on scheduled bookings

__init__.py

@@ -5,8 +5,8 @@
 
 from trytond.pool import Pool
 from .ir import Rule
-from .planner import ScheduledBooking
-from .cashbook import Cashbook
+from .planner import ScheduledBooking, ScheduledBookingCashbookRel
+from .cashbook import Cashbook, CashbookLine
 from .cron import Cron
 from .nextrun import NextRun
 
@@ -17,5 +17,7 @@ def register():
         ScheduledBooking,
         NextRun,
         Cashbook,
+        CashbookLine,
         Cron,
+        ScheduledBookingCashbookRel,
         module='cashbook_planner', type_='model')