does not seem to work with Python 3

Here is an error when running the hypercube notebook which I believe is due to Pyhton 3 issues.
I am using version 0.4.2 of hypertools.
DIMS: 3

---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
in ()
1 for dims in range(3,9):
2 print('DIMS: ' + str(dims))
----> 3 hyp.plot(hypercube(dims), 'k.')

in hypercube(ndims, res, x_min, x_max)
1 def hypercube(ndims=4, res=100, x_min=-1, x_max=1):
2 length = x_max - x_min
----> 3 vertices = (ff2n(ndims) + 1) / 2
4 vertices *= length
5 vertices += x_min

~\Anaconda3\lib\site-packages\pyDOE\doe_factorial.py in ff2n(n)
113 [ 1., -1., 1.],
114 [-1., 1., 1.],
--> 115 [ 1., 1., 1.]])
116
117 """

~\Anaconda3\lib\site-packages\pyDOE\doe_factorial.py in fullfact(levels)
76 lvl = []
77 for j in range(levels[i]):
---> 78 lvl += [j]*int(level_repeat)
79
80 rng = lvl*int(range_repeat)

TypeError: 'numpy.float64' object cannot be interpreted as an integer

​ALan