Merge pull request #957 from dengemann/cov-plot

ENH: return individual figures in plot_cov
expose API in example
Merge pull request #958 from dengemann/cov-plot

ENH: return individual figures in plot_cov
Merge pull request #959 from TalLinzen/drop_epochs_out_of_bounds

drop_epochs: Check indices are not out of bounds
ENH : add time generalization decoding
delete the savefig
Merge pull request #953 from agramfort/time_gen

WIP Time generalization decoding
ENH/FIX: add missing EEG tagging
Improve verbose using decorator module
FIX: Catching ImportError on decorator
Making it marginally more readable
Couple of extra comments for clarity
Changes to conform to PEP8
Incorporating decorator module code inline (BSD licensed)
move decorator code to externals folder
udpate setup.py
FIX gui:  import when traits not installed
FIX:  kit2fiff_gui handler
FIX kit2fiff_gui:  handle ELP with more than 5 points
ENH kit2fiff:  more checks for correct input