ENH kit coreg read_hsp(): limit number of points
FIX: coreg_gui
ENH KIT support: allow setting corey after KITRaw construction, add write_hsp() function
ADD: viewer module for HeadViewController, PointObject, SurfaceObject
OPT apply_transform: only transpose trans
ENH: add coord_trans() function for transform between different coordinate systems (ALS to RAS)
ENH marker_gui
ADD kit2fiff_gui
ADD fiducials_gui
update mne.gui: add fiducials()
ENH coreg: proper error message
ENH coreg:  scale_mri stores pickled params
fiff.KIT

 - use 'hsp' from picked hsp
kit2fiff_gui
viewer
ENH: RawKIT.__repr__
ENH transforms: add rotation3d
ADD file_traits
marker GUI
ENH source_space: add mne_prepare_bem_model and mne_setup_source_space wrappers