read_mgz: Function to load `FreeSurfer` `mgz/mgh` file
Description
The function `read_mgz` is a dynamic wrapper of Python `nibabel` loader.
If no Python is detected, it will switch to built-in function `read_fs_mgh_mgz`,
which has limited features.
Usage
read_mgz(path)
Format
An R function acting as safe wrapper for nibabel.load.