- Methods `get_as_column`,`create`, attribute `column` are removed from `BaseModel` class
- Move tests outside turbo package
- Rewrite insert,update,remove with the latest pymongo collection methods like `insert_one`,`insert_many` and so on.
- `BaseModel` method `inc` add multi docs support
- add `mongo_model` module for support [motor](http://motor.readthedocs.io/en/stable/)
**warning**