Status updates on tasks
| Column | Type | References | Comments |
| id | Integer | Primary key | |
| guid | String | ||
| vdb_id | Integer | ||
| created | Date | Date of update | |
| task_id | Integer | db_task.id | Task associated with this update |
| creator_id | Integer | db_person.id | Creator of this update |
| percent_complete | Integer | % complete | |
| comments | String | Comments | |
| actual_start | Date | Actual start | |
| actual_finish | Date | Actual finish |