nibabel 1.2.0

This release had large contributions from Krish Subramaniam, Alexandre Gramfort, Cindee Madison, Félix C. Morency and Christian Haselgrove.

• New feature and bugfix release
• Freesurfer format support by Krish Subramaniam and Alexandre Gramfort.
• ECAT read write support by Cindee Madison and Félix C. Morency.
• A DICOM fuse filesystem by Christian Haselgrove.
• Much work on making data scaling on read and write more robust to rounding error and overflow (MB).
• Import of nipy functions for working with affine transformation matrices.
• Added methods for working with nifti sform and qform fields by Bago Amirbekian and MB, with useful discussion by Brendan Moloney.
• Fixes to read / write of RGB analyze images by Bago Amirbekian.
• Extensions to concat_images by Yannick Schwartz.
• A new nib-ls script to display information about neuroimaging files, and various other useful fixes by Yaroslav Halchenko.