Distance between a point and a line/plane

I see the following method stubs in *occ_impl/geom.py*:
```
def distanceToLine(self):
raise NotImplementedError("Have not needed this yet, but OCCT supports it!")

...

def distanceToPlane(self):
raise NotImplementedError("Have not needed this yet, but OCCT supports it!")
```

Any chance these could be implemented? Sure would be nice to have a clean way of accessing this functionality at the cadquery level, instead of digging into OCCT objects.