Fix #98: Use the stricter and more reliable cache format that congress-legislators does.
Fix #98: Use the stricter and more reliable cache format that congress-legislators does.

sunlightlabs/congress-opencongress,unitedstates/congress,chriscondon/billtext,boblannon/congress,boblannon/congress,chriscondon/billtext,unitedstates/congress,sunlightlabs/congress-opencongress,Nolawee/congress,Nolawee/congress