[ADD] pass through rruleset functions

field_rrule/README.rst

@@ -14,7 +14,7 @@ Usage
 To use this module, you need to:
 
 * depend on it
-* say ``from openerp.addons.field_rrule.field_rrule import FieldRRule``
+* say ``from openerp.addons.field_rrule import FieldRRule``
 * use ``FieldRRule`` like any other field
 * on forms, use ``widget="rrule"``
 * have a look at `demo/res_partner.*`

field_rrule/field_rrule.py

@@ -70,6 +70,18 @@ class SerializableRRuleSet(rruleset, list):
     def __getslice__(self, i, j):
         return rruleset.__getitem__(self(), slice(i, j))
 
+    def between(self, after, before, inc=False):
+        return self().between(after, before, inc=inc)
+
+    def after(self, dt, inc=False):
+        return self().after(dt, inc=inc)
+
+    def before(self, dt, inc=False):
+        return self().before(dt, inc=inc)
+
+    def count(self):
+        return self().count()
+
 
 class FieldRRule(fields.Serialized):
     def convert_to_cache(self, value, record, validate=True):