begin serious work on comparator code. needs more work
in-work
initial commit for comparator structure
Merge branch 'comparator'

* comparator:
  initial commit for comparator structure
  in-work
  begin serious work on comparator code. needs more work
Merge branch 'master' of https://github.com/mahinshaw/msproject

* 'master' of https://github.com/mahinshaw/msproject:
  Small updates
  Fixed minor bugs
  Fixed te C2E function
  New question and additional nodes added to GAIL and KB
  Changes made to accommodate Cause to Effect scheme