shouldn't `rnum_methods` and `inum_methods` be set in `fastuple`? 

Noticed that `rnum_methods` and `inum_methods` are exported but never set into `fastuple`:
https://github.com/fastai/fastcore/blob/f7fea257626106e2016d4a55d280f8b876f6dcb4/fastcore/basics.py#L795

Shouldn't it be:
```py
for n in num_methods + rnum_methods +inum_methods:
    if not hasattr(fastuple, n) and hasattr(operator,n): setattr(fastuple,n,_get_op(n))
```
?