* Add copy-to-clipboard button and JS
* Ignore line numbers if present
* Rewrite heading permalink code to use vanilla JS
* README: Add credits to zenorocha/clipboard.js (MIT License)
@iBug really wants a place here in the Credits section :P
* Add .no-copy for hiding the button, update docs
* Add td.rouge-code to selectors
* Fix navigator.clipboard branch
* Add screenreader text for copy button
* Restore focus to the button after copying
* Add site-wide enable switch
* Add rel=me to author profile links
* Add h-card Microformats markup
* Add h-entry microformat markup
* Fix missing anchor tag
* Fix h-entry microformat markup on single template
* Use minimal subset of Microformat elements
* Move dt-published to `page__date.html` and remove dt-updated
* Remove "author" and "summary"
Leaves "url" as a hidden element
* Add page link to h1 tag
The h1 tag now contains the Schema-org `url` itemprop and the
Microformats `url` class in an anchor tag. The anchor tag is styled to
not look like a link.
* Put author 'u-url' on author__name h3
This also puts the same `{{ author.home | default: '/' | absolute_url }}`
construct on `author__avatar` to remove the Jekyll `author.home`
conditional.
Also addresses SCSS text color error.
* Made notice Sass color mixing in based on $background-color and $text-color instead of hard-coded black and white values.
* Made some style adjustments to notices to improve readability.
Notice links are slightly darkened from the notice color, mostly because the gray-on-gray default notice links were very hard to read. Rather than being $notice-color, they are `mix(#000, $notice-color, 10%)`.
The notice background mix and code-background mix can now be set with the SCSS variables $notice-background-mix and $code-notice-background-mix.
The default mix for background was adjusted to 80%, from 90%.
The default mix for code-background was adjusted to 90%, from 95%.
Skins that still didn't read well were adjusted individually.
* Adjusted sunrise $notice-background-mix to 75%
* Adjusted dark theme notice background mix colors back to the default
Co-authored-by: Tom Manner <tsmanner@us.ibm.com>