Detrend na.action changed to na.exclude; fills with NA where there is no data rather than omitting
changed Detrend to detrend matrices/dataframes by indiv columns, check that passed object is not character/logical. updated is.NA test for it
Detrend now retains passed dimnames. added Detrend(rounded) into ENSORecon for detrendTestA
rounded detrend code in ENSORecon