Using bitwise (&|~)in a query
Since it's a unary operator, you can probably get it working with something like:

```python

def bin_not(value):
    return NodeList((SQL('~'), value))
```
IN http://docs.peewee-orm.com/en/latest/peewee/query_operators.html

.bin_and(value) -> Binary AND

.bin_or(value) ->  Binary OR

but,I can not find the replace of Binary NOT .How can I write a peewee-style c=a&(~b)?

