bug fix in xml_cleanup
Merge pull request #24 from ARTFL-Project/master

merge downstream
increased buffer size in pack.c; was causing errors on long lines in word records
removed redundant try/except in navigation, added attempt to get n with type in toc
modified ObjectWrapper for initialization w/pre-fetched Row; using this in navigation report for safer lookup
Merge pull request #276 from rwhaling/master

bug fix in xml_cleanup