- The ``mri`` parameter in :func:`mne.setup_volume_source_space` is now automatically set to ``T1.mgz`` if ``subject`` is provided. This allows to get a :class:`mne.SourceSpaces` of kind ``volume`` more automatically. By `Alex Gramfort`_

- Allow string argument in :meth:`mne.io.Raw.drop_channels` to remove a single channel by `Clemens Brunner`_

from scipy import linalg

from .io.constants import FIFF, FWD

from .io.write import (start_file, start_block, write_float, write_int,

write_float_matrix, write_int_matrix, end_block,

end_file)

from .channels import _contains_ch_type

from ..transforms import (apply_trans, get_ras_to_neuromag_trans, _sph_to_cart,

_topo_to_sph, _str_to_frame, _frame_to_str)

from ..io.pick import pick_types

from ..io.open import fiff_open

from ..io.constants import FIFF

from mne.coreg import fit_matched_points

from mne.transforms import apply_trans, get_ras_to_neuromag_trans

from mne.io.constants import FIFF

from mne.viz._3d import _fiducial_coords

from mne.io.kit import read_mrk