Doc refinements to arg_subtoggle.
Speeded up a bottleneck in flt_beamformer.
Added diagnostic message to flt_clean_channels.
Added missing randsample function to flt_repair_channels.
Updated flt_selchans to use the new utl_match_channels.
Fixed an oversight in onl_peek (would by default only pull one channel).
Added ult_match_channels (replaces prior use of eeg_matchchan).
Added small version of Montreal head model.