VoxelwiseEV and VoxelwiseConfoundEV classes share a common base class.

Ci/fix zenodo

See merge request fsl/fslpy!82

DOC: Changelog [skip ci]

See merge request fsl/fslpy!81

Mnt/zenodo

See merge request fsl/fslpy!80

Mnt/msc

See merge request fsl/fslpy!79

BUG: Corrected name of kurtosis file produced by dtifit

See merge request fsl/fslpy!77

Bf/imcp paths

See merge request fsl/fslpy!78

It's called kurt rather than MK

This is helpful for scripts which write out a logfile for example

Also, a couple of FNIRT fixes - Jacobian option is an image and a couple of
options that were previously compulsary are now optional (because they are
not required in certain circumstances)

This is because the logic for selecting a command now checks for
a file actually existing in FSLDEVDIR, FSLDIR etc, so we need to
make sure a corresponding file actually exists before doing a command
line wrapper test

Doc/filetree

See merge request fsl/fslpy!76

Added filetree to fslpy

See merge request fsl/fslpy!69

reverting back

needed for python 3.5

Mnt/drop py2734

See merge request fsl/fslpy!75