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
- Use a negative right margin to pull `.grid__wrapper` into the dead space left for a sidebar.
- Add sample documents to "portfolio" collection to test grid view
- Update CHANGELOG and history
* Fix collapsed white-space above pagination links
* Improve `page` and `archive` layout
- Center main content on page
- Harmonize sidebar columns to be equal widths
Fixes#1155
* Update CHANGELOG and history
* Position and align right sidebar with the top of the main content
* Offset right sidebar at `$large` viewport
* Add TOC bottom include test post
* Add right sidebar styling edits to documentation site
* Add TOC bottom include test post
- Add `---` YAML Front Matter as a workaround to allow the theme gem's version to be overridden locally.
- Adjust page scope in Front Matter default to avoid adding a layout to `main.min.js`
- Fixes#874, Fixes#722
- 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
