* restructure markup & markdown to prepare for multiple markup languages support
* adjust some functions between markdown and markup
* fix tests
* improve the comments
* Markdown rendering overhaul
Cleaned up and squashed commits into single one.
Signed-off-by: Andrew Boyarshin <boyarshinand@gmail.com>
* Fix markdown API, add markdown module and API tests, improve code coverage
Signed-off-by: Andrew Boyarshin <boyarshinand@gmail.com>