Conditional query of multiple in
Peewee supports multiple IN conditions:

```python

# postgres:
in_list = ValuesList([(1, 'u1'), (2, 'u2'), (7, 'u7'), (8, 'u8')])
query = User.select().where(Tuple(User.id, User.username).in_(in_list))


# note sqlite requires additional parentheses:
from peewee import EnclosedNodeList
in_list = EnclosedNodeList([in_list])
query = User.select().where(Tuple(User.id, User.username).in_(in_list))
``` thank you  
Does peewee support multiple in query conditions? Can batch query if not supported?
```
pre_out = Txouts.select(Txouts.tx_id,Txouts.value,Txouts.scriptpubkey)\
                         .where(Txouts.tx_id==ins["prevout_tx_id"],Txouts.n==ins["prevout_n"]).dicts()
```

such as
```
SQL：
SELECT * from M 
where
(R, D) in (("200909","1"),("511904","1"),("200908","4"));
```