Merge pull request #141 from jamespjh/graphviz_args

Support neato use through graphviz filter
Merge pull request #138 from jamespjh/websequencediagrams

Add Web Sequence Diagrams filter
Add finalize_additional_doc method.
Update asciidoctor filters.
Add new Confluence API filter.
Remove custom mime types.
Remove parent code.
Fix attachments uploading. Implement text replacement.
Fix some bugs with the confluence filter.
Make it easy for pydoc to skip setup.py files, do so by default.
Log skipping files due to skip-setup-py setting.
Merge pull request #143 from jamespjh/name_interpolation

Add more options for custom file name generation
Only fix attachment paths if there were attachments uploaded.
Merge branch 'develop' of github.com:dexy/dexy into develop
Add parent-page-id option to confluence pages.
Add 'style' keyword arg to highlight plugin function.
Version bump.
Add perl filter.
Improve error message when attempting to reference invalid path.
Fix bug when style is None.