The main functional change is that PUC will now use shorter HTTP request timeouts when not running inside a Cron task. This is to comply with the WP VIP coding standard that strongly recommends a maximum timeout of 3 seconds.
Prompted by #107
The notice: "Passing null to parameter #1 ($string) of type string is deprecated". This could be triggered because some update fields can be null, like the upgrade notice field.
Technically, this is not necessary because that part of the library hasn't really changed, but let's use the same version number everywhere for consistency.
^ Except dependencies like Parsedown.
The readme is now out of date. The legacy version of Parsedown was removed because we no longer need to support PHP versions older than 5.3. The stub file that loads ParsedownModern.php stays in place because it has the "class_exists" check.
Yahnis Elsts