Random spit polish

- Don't print "Unrecognized lemur command" if no command was specified.
- When duplicate command line args are created, report only the duplicates.
- Change time-str's default to match its comment and apparent desired form.
- Tweak some comments.
- Whitespace and :import cleanups.
More comment fixes.
Fix indentation
Merge pull request #19 from jeddenlea/master

Random spit polish