Allow arbitrary buffer length in real time
Merge pull request #1676 from mainakjas/buffer_length

Allow arbitrary buffer length in real time
ENH: centralize polhemus data readers

Fixed their references
ADD test for polhemus readers
Remove specific hsp/elp reader

This parsing is easily done with np.loadtxt. Code updated accordingly.
FIX _set_dig_neuromag for _kit2fiff_gui
WIP
Check shape when reading file
PEP8
TEMP transform