Snakemd

* Added replace_link() method to Paragraph
* Added various state methods to InlineText
* Expanded testing
* Lowered log level to INFO for verify URL errors
* Added code coverage to build

* Restructured api, so snakemd is the import module
* Updated usage page to show more features
* Fixed issue where base docs link would reroute to index.html directly

- Added favicon to docs (26)
- Added mass URL verification function to Paragraph class (27)
- Expanded testing to ensure code works as expected
- Changed behavior of insert_link() to mimic str.replace() (19)
- Added a replace method to Paragraph (27)
- Added plausible tracking to latest version of docs (25)

* Missed a dependency during the 0.4.0 release, so docs did not publish

* Added support for Python logging library
* Expanded support for strings in the Header, Paragraph, and MDList classes
* Fixed an issue where Paragraphs would sometimes render unexpected spaces
* Added GitHub links to version history page
* Added support for column alignment on tables
* Fixed issue where tables sometimes wouldn't pretty print properly

* Gave documentation a major overhaul
* Added support for paragraphs in MDList
* Added is_text() method to Paragraph
* Fixed issue where punctuation sometimes rendered with an extra space in front