Add pdftables-render --interactive to jump to debugger
Bugfix: table bounding box was excluding glyphs at top and bottom due to rounding
Add working poppler PDFPage.get_glyphs (poppler backend now works)
Make poppler backend work
Merge pull request #87 from scraperwiki/poppler-backend

Make the poppler backend work (PDFTABLES_BACKEND=poppler)