Update to ndarray-0.12

[ManifoldFR]

bluss released ndarray 0.12 just a few days ago, and when I upgraded the dependencies on my project, the Python library wouldn't compile anymore because the versions of ndarray were different. I'll make a fork to see if everything works 👌

[kngwyu]

Thanks for notification!
I published 0.3.1 with ndarray = ">= 0.11"

[termoshtt]

rust-ndarray/ndarray#479

num-complex should be upgraded to 0.2

[kngwyu]

Thanks, I also updated num-complex and released 0.3.2

[ManifoldFR]

Works pretty well, it's all good