Corpus Callosum segmentation improvement

Small fix in the Corpus Callosum probability calculation that improves its segmentation.

dHCP pipeline

Features:

• dHCP pipeline improvements as described in [1]:
  • multi-channel registration
  • modelling of hyper and hypo-intensities.

Hotfixes / Code improvements:

• automatic building of N4 tool
• automatic download of atlases
• installation of pipeline as MIRTK tool

References:

1. A. Makropoulos, E. C. Robinson et al. "The Developing Human Connectome Project: a Minimal Processing Pipeline for Neonatal Cortical Surface Reconstruction", NeuroImage, 2018

Initial Draw-EM release

• Draw-EM as package of MIRTK