* initial concept

* first version

* added golden tests

* added list, images, links

* added hr, blockquote,  ...

* added initialization and removed rules from global scope

* added table and keep/remove

* added basic docs

* fixed: newlines in header

* added youtube plugin

* try frontmatter&vimeo plugin

* rewrote internals, improved docs, added examples

* fully implemented options

* added docs for options