ENH: return last n sampleas as epoch
ENH: add picks param
Automatic box size estimation.

When creating layouts on the fly with `make_eeg_layout` and
`make_grid_layout`, an appropriate box size is now automatically
generated.
Added tests for layout generation
small fixes to comments
Added test for n_col parameter of `make_grid_layout`
doc fixes
!= --> is not
PEP8 fixes
more PEP8 fixes
even more PEP8 fixes. Changes padding parameter of `_box_size`
_box_size now uses scipy.spatial.distance.pdist

SciPy has an optimized function for computing pair-wise distances
between points. Make `_box_size` use it.
pep8 has no more complaints
whitespace around operators
removed unnecessary variable
Fixed input validation of `make_eeg_layout`

I fixed a typo on the input validation and added some unit tests
to check the input validation logic.
Added Marijn van Vliet to whats new page
typo
ENH: line width for nodes in circ plot
Merge pull request #1551 from mluessi/enh_circle_node_linewidth

ENH: line width for nodes in circ plot