Create a fillet between two lines or Part.Edges.
Parameters
----------
objs: list
List of two objects of type wire, or edges.
radius: float, optional
It defaults to 100. The curvature of the fillet.
chamfer: bool, optional
It defaults to `False`. If it is `True` it no longer produces
a rounded fillet but a chamfer (straight edge)
with the value of the `radius`.
delete: bool, optional
It defaults to `False`. If it is `True` it will delete
the pair of objects that are used to create the fillet.
Otherwise, the original objects will still be there.
Returns
-------
Part::Part2DObjectPython
The object of Proxy type `'Fillet'`.
It returns `None` if it fails producing the object.