Remove obsolete versions of PLN related files
Remove more obsolete PLN files
Update atom_types.script
Merge pull request #489 from cosmoharrigan/pln-cleanup

Remove obsolete versions of PLN related files
Remove obsolete files from embodiment/scm for natural language dialogue with the pet
Merge pull request #491 from cosmoharrigan/cleanup

Remove obsolete files from embodiment/scm for natural language dialogue with the pet