Thanks for your support, this is great news! Let me know if I can help in any way.

If you plan to reactivate developing on PuSHPress, perhaps we can join forces and merge both PubSubHubbub plugin into one:

https://github.com/pubsubhubbub/wordpress-pubsubhubbub
https://wordpress.org/plugins/pubsubhubbub/

The plugin still supports WebSub and has support for custom feeds, to support for example OStatus (Mastodon) and the IndieWeb:

https://wordpress.org/plugins/ostatus-for-wordpress/
https://indieweb.org/WebSub

I am also curious to see WordPress.com supporting the OpenWeb/IndieWeb.