updated todo.md

todo.md

@@ -9,17 +9,15 @@
 - implement a flag class for enumerations
 
 - PK generator
-1. Introduce execute_context
-2. Introduce execute_result
-3. Add `abstract_pk_generator` class
-4. Add `identity_pk_generator` class
-5. Add `sequence_pk_generator` class
-6. Add `table_pk_generator` class
-7. Add `manual_pk_generator` class 
-8. Extend `session::insert` logic to use pk generator
-9. Extend `postgres_connection::execute` to handle `returning` clause
-10. Add generator to `schema_node` or `table` class when attaching type
-11. Extend `query_builder` and `intermediates` with `returning` intermediate
+1. Introduce execute_result
+2. Add `abstract_pk_generator` class
+3. Add `identity_pk_generator` class
+4. Add `sequence_pk_generator` class
+5. Add `table_pk_generator` class
+6. Add `manual_pk_generator` class 
+7. Extend `session::insert` logic to use pk generator
+8. Add generator to `schema_node` or `table` class when attaching type
+9. add `make_object`function
 
 __Proposal for polymorphic classes:__