ENH: `applymap` get kwargs?
`apply` has `kwargs` whilst `applymap` does not. Is there a specific reason for this?

it's straight forward to do 

```
apply(f, **kwarrgs)
```
or
```
g = partial(f **kwargs)
applymap(g)
```

its not documented how this can be achieved with `partial` which the more casual user might miss?

