Keep irregular paragraphs (i.e. those without markers) on the same level unless following a header
Disambiguate roman numerals as best we can
Collapsed markers can now appear within appendices
Tighter definitions for collapsed paragraph markers. Use a different technique to allow for disambiguation
This 'irregular' check is no longer needed
PEP 8
Merge pull request #145 from cmc333333/more-appendix-par-fixes

Additional Appendix Paragraph Logic