Combining CleverDict functionality with other classes #5
Description
It would be great if CleverDict behaviour could be easily 'grafted on' to existing classes using inheritance, without causing recursion or requiring a rewrite/overwrite of the original class.
For example if it were as easy as:
```
>>> class MyDatetime(datetime.datetime, CleverDict):
... pass
>>> mdt = MyDatetime.now()
>>> mdt.hour
4
>>> mdt['hour']
4
```