better handling of feeds without pubDates
added wrappers for rss and scraper url openers and fixed richard burr absolute links
added date_from_rss_item method
better date_from_rss_item
added http protocol to absolute link generator
added invalid rss to specs
bumped to version 0.7
fixed inhofe scraper
bumped to 0.7.1
added scraper for Palazzo
fixed Date parser for empty dates
bumped to version 0.7.2
moved donnelly into separate scraper
bumped to 0.7.3
fixed donnelly
fixes to donnelly and vitter_cowan
fixed Johanns absolute links
fixed date parsing
bumped to 0.7.5
added two senate cmte scrapers