Merge branch 'bf/mesh' into 'master'

CHANGELOG.rst

fsl/data/gifti.py

fsl/data/mesh.py

fsl/transform/nonlinear.py

tests/test_atlases_query.py

tests/test_gifti.py

tests/test_image_resample.py

tests/test_imagewrapper.py

tests/test_mesh.py

tests/test_transform/test_affine.py

tests/test_transform/test_nonlinear.py