Begin parser for voteview rollcall info. (Currently supports up to the 106th Congress.)
voteview: determine which session of Congress the vote occurs in using GovTrack's sessions.tsv, hook into vote_info.output_vote() for writing JSON and XML, and separate the president's position from Member votes
voteview: make sure we're using the right .ord/.dtl URLs by scraping the .htm page listed on voteview.com for <a> hrefs, and report date parsing problems
Merge @GPHemsley's voteview roll call data parser