move functionality into proper files.

Signed-off-by: aj rossini <blindglobe@gmail.com>
remove dataframe-utilities due to refactoring.

Signed-off-by: aj rossini <blindglobe@gmail.com>
whitespace.

Signed-off-by: aj rossini <blindglobe@gmail.com>
fixed up nvars definition.

Signed-off-by: aj rossini <blindglobe@gmail.com>
removal of duplicates (within/between files!  yech, tony's fault)

fixed ncases

Signed-off-by: aj rossini <blindglobe@gmail.com>
sum  needs to be defined and exported.  Include in the statistics.lisp toolkit in descriptives, I think?  Removed since need to review API where and how.

Signed-off-by: aj rossini <blindglobe@gmail.com>
mean SHOULD NOT index.  Index using a dedicated index function BEFORE computing.

Signed-off-by: aj rossini <blindglobe@gmail.com>
more dataframe cleanups.  Ensure generics are in the right place, and we need to update the template.

Signed-off-by: aj rossini <blindglobe@gmail.com>