3x os.chmod ->  1x os.umask
One-liner.
Shrinking the size of grade_homework by moving things (part 1 of many).
Pulled more input out.
Reorganized version updating
Moved update_version
More get_input happiness
Attempting versioning again.
One more versioning attempt.
Minor things
Merge branch 'dev'

Conflicts:
	grade_homework.py