It's "developer preview" builds. Mainly intended for testing prior to a release. I think there is no need in daily builds as I'm unable to add key features so frequently...

Btw, thanks for PR-ing, HunterZ 😁

Any time!

I've got the source changelog in my RSS reader and have been impressed with the regular pace of development.

The preview build is appreciated, since it's been a while since 1.20 was released.