Merge pull request #5 from stl-racket-laptop/master

main.rkt for group session-003
WorldState data definition
exercise 38
update progress note
move WorldState data def
clean up comments, descriptions
Exercise 39
update wip note
Added darrens exercise solutons under dcc
cat images for session-003
ignore more temp files
stub for session-004 work
exercises 40 - 45
Merge pull request #7 from michaelsbradleyjr/master

remaining exercises for session #3
Merge pull request #6 from darrencruse/master

Added darrens exercise solutons under dcc