Add conf and build files for managing citedown project through gradle.
Make separate READMEs for this fork and original pegdown.
Add new README.
Organize project for default joint compilation and testing of java and groovy.
Add unit test for constructor and minimal html function.
Add TreeUtil.
Correct package names.
Adjust leading tabs in ASCII tree printing.
Initial unit tests for new utils class; update README.
Add support for bullet lists.
Initial framework for urn resolution.
Resolve cited image type URNs.
Rm renamed file.
Resolve cited texts.
Resolve cited objects.
Add collecting reference map.
Change parsing approach to avoid SuperNode altogether.
Add EmphNode.
Add inlineStack.
Add support for inline emphasis, strong and for bulleted lists.