Remove rolling links

[hakimel]

They're buggy when the link text is large or breaks into multiple lines. I want the default style of the framework to be (a bit) less flashy and more functional.

[dandv]

Sad to see the rolling links go. If the more common case is to have single-line links, perhaps it would serve more users to keep them and document the issue with multi-line links?

[hakimel]

@dandv Feedback heard. Though I really don't like having an unstable feature in there, immediately breaking backwards compatibility might not be the right move. Rolling links are back in but turned off by default (deprecated) and the long term plan is still to remove them entirely.