* Squashed commit of the following:

commit 96c5901ab197e060219bdb0040d435cf95837d57
Author: Matthew Muckley <matt.muckley@gmail.com>
Date:   Thu Nov 5 15:33:38 2020 -0800

    Rename experimental to fastmri_examples

commit a5fc77e21db1c09252abf7362805184f0667eec1
Author: Matthew Muckley <matt.muckley@gmail.com>
Date:   Thu Nov 5 13:45:30 2020 -0800

    Fix test transforms

commit c367b4a9d54030381fd80588220cbec6295a1eae
Author: Matthew Muckley <matt.muckley@gmail.com>
Date:   Tue Nov 3 14:33:36 2020 -0800

    Update docstrings

commit 8c4fe2b846ffeba1a3767220578723d44008a8bc
Author: Matthew Muckley <matt.muckley@gmail.com>
Date:   Tue Nov 3 14:31:33 2020 -0800

    Correct types for datatransform

commit ab2313073e99bb4acbbc4e45ed756f625c3b462e
Author: Matthew Muckley <matt.muckley@gmail.com>
Date:   Tue Nov 3 11:04:37 2020 -0800

    Fix varnet transform

commit 94b9916f42af070fcef04c5b9c8f81a50f8bd296
Author: Matt...