* Added object.__sizeof__
* Removed __sizeof__ inherited from object
* Made sqlite3 classes for Python 2 inherit from object
* Removed __sizeof__ inherited from object
- Cursor is an Iterator of Any now, and .__iter__(..) and .__next__(..)
have been changed / made explicit to reflect this.
- .fetchall(..)/.fetchmany(..)/.fetchone(..) return (lists of) Anys
instead of tuples.
As per discussion in PR #663, the output of fetching values from the
cursor can be customized with a custom assignment to
.row_factory. Therefore the correct return type for fetching is Any and
not tuple.