Update CHANGELOG and history

Show a permalink anchor when hovering over headings in main content (#2251)

* Implement heading permalinks, close #2246

Thanks to jekyll/jekyll for CSS.
Link anchor is visible when the mouse hovers over the title line.

* Build the updated _main.js

Update CHANGELOG and history

Allow per-page override of words_per_minute (#2250)

Different languages usually have different read speeds.
This change is useful for sites with multi-lingual content

Update CHANGELOG and history

Fix http links to use https (#2244)

Every site should support https by now. Better to link the https sites right away. Both sites do support https at the time I checked.

Update CHANGELOG and history

Fix typo in config comment (#2243)

Update onchange development dependency in package.json

Close #2241

Update CHANGELOG, history, and docs

Translate into Catalan (#2237)

* Translate into Catalan
* Translate missing key
* Pluralize key

Release 4.16.6 💎

Remove jemoji gem

Bump dependencies

Ignore Jekyll cache

Relax Jekyll dependency to allow for version 4.0

Fix `site.url` in Organization/Person JSON-LD schema

Close #1906

Harmonize `site.url` for Organization JSON-LD schema

Fix typos

Update CHANGELOG and history