convert_directory() now sync()'s to outdir.
Broken snapshot of adding hacky just do it now way of making index pages.
Made list_notebooks() and Notebook.from_path().
Snapshot current state.
Bulk up the idea of using EnNote directly and mostly ignoring EnexFile after parse.
Generate full indexes with ugly implementation.
Drop some debugging cruft.
Flick off using cached cross link db (was for debugging.)
Fix sync to output directory.