"One-time events" `on_startup(command)`, `on_shutdown`.
Their presence also shows that a plugin *wants* to persist across builds. Otherwise they will be re-created, to not change any existing behavior.
Includes all upgrades 0.4.1->0.4.2->0.4.3->0.5.0rc->0.5.0rc2->0.5.0->0.5.1->1.0.0rc1->1.0.0
* Add the ability to use a logo in place of site_name in base.html
* New option `anonymize_ip`
* Drop Modernizr.js
* Upgrade jQuery (to 3.6.0) and others
* Updated screenshots to reflect the actual pages in the tutorial (fixes#870).
* Added a few new screenshots to demonstrate more features (search).
* Replaced the `initial-config.png` screenshot with a code block.
* Corrected the inconsistant use of "you" and "we" throughout (use "you").
* Added links to various locations in the docs where appropriate.
* General cleanup, formatting, etc.
