Add test directory
Reorganize argparser to integrate better with __main__.py
Capitalize variable names in config.py
Update main functions to support command line option specs
Add bug to TODO
Set up utils.py to be able to import markdown, link, compile
Fix slug regex bug
Add header_tests
Merge branch 'main' into testing
Add more header tests
Fix some bugs with headers
Add noParagraph tests to header_tests
Add emphasis tests
Add assertMarkdown to tests/utils.py and code tag tests
Begin link tests
Markdown: be consistent with link tag title quotes
Add link tests and fix bug in markdown comparison in utils.py
fix reference id regex bug in markdown
Add consecutive reference test
Fix trailing newline bug with references