This replaces all `http://` and `//:` links with `https:`. The protocol-
relative URL scheme is now deemed to be an anti-pattern. There are
security advantages to using HTTPS, and there are no significant
performance concerns.
In short, if the asset we need is available via HTTPS, then that asset
should always be loaded via HTTPS.
Fixes#1736
By using "//" instead of "http://" when referring to external resources
such as fonts (e.g., from within CSS files), warnings about "insecure"
content can be avoided.
aboutme, bitbucket, google-groups, hackernews, reddit,
slideshare, speakerdeck, vimeo, youtube
Also, fix spacing below a line-block.
Try this in resT::
| First line
| Second line
| Third line
New paragraph.
Another paragraph.
Notice how the line-block runs into the first paragraph without the new CSS.
