* Add jekyll-toc include
* Reduce whitespace generated by comments
* Add table of contents include to `single` layout
* Replace `toc` include with jekyll-toc enabled YAML Front Matter
* Update README
* Update table of contents documentation
- Revise `toc` helper include to mention that it will be deprecated in the next major version.
- Add documentation to `single` layout explaining how to enable table of contents on those pages.
* Update CHANGELOG and history
* Update LICENSE
Close#1222
Correct "Posts by Tag" (singular) to be more consistent with "Posts by Category"
* Update tag-archive.html
* Update about.md
* Update 10-layouts.md
* Update README.md
* Update 14-helpers.md
- Jekyll ignore `/docs` and `/test` folders when using from root
- Update Staticman config to point to correct branch and data file location
- Replace `{{ base_path }}` references with `absolute_url` filter
- Update documentation
