Use seen_ids instead of XPath to find existing IDs
Use seen_ids instead of XPath to find existing IDs

h/t @felixfontein

Signed-off-by: Chris Warrick <de6f931166e131a07f31c96c765aee08f061d1a5@gmail.com>

getnikola/nikola,gwax/nikola,getnikola/nikola,okin/nikola,xuhdev/nikola,xuhdev/nikola,getnikola/nikola,okin/nikola,okin/nikola,gwax/nikola,xuhdev/nikola,okin/nikola,xuhdev/nikola,gwax/nikola,getnikola/nikola