Norman

Fixes `operands could not be broadcast` error when the subscripts contain ellipsis and the operands are shapes.

3

## Description When the subscript contain ellipsis and operands are shape, we get the following error: ``` ValueError: operands could not be broadcast together with shapes (..) ``` This is...

`contract_path` with ellipsis fails when `shapes=True`

1

Easy way to reproduce: ```python input = np.random.rand(1,3,5,2,) a = np.random.rand(2) b = np.random.rand(7) # ValueError: operands could not be broadcast together with shapes (4,) (0,) oe.contract_path('...D,D,k->...k', input.shape, a.shape, b.shape,...