get rid of foreach
forgotten library
read file as zoo
preserve column name
merge zoo metrics
unused merge function
filter columns for zoo object
make ranges in one step (removing outliers is broken)
unset outliers instead of NAs
filter columns containing less than outliers.rm non NA values
get.relative.time
filter.columns -> filter.metrics
simplify linear.score.vector by using lm(subset=)
simplify linear.score
cosmetics
find.linear
diff column sets
drop linear.score
find correlation with any value, not only rel.time
find.constant, find.normal