functionalizing out plotting code so that it's easier to do cross-list comparison
tweaks to the date parser so it doesn't fail on the odd Brazilian 2002 case
put dates on the activity charts
thicker interaction graph labels, and a fix to ref parsing
verbose mode when making graphs
more error handling on date parsing
condense plotting logic across mailing lists and improve ascendancy comparison
Merge branch 'master' of github.com:sbenthall/bigbang