Got the #Signet Windows and MacOS builds done, signed and uploaded.

Linux and Windows releases are well tested.

I did some testing on my development machine for the Mac version, but still need to go test it on a separate Mac to be sure. I've seen problems in the past where it worked on the build box but not on another Mac.

Once testing is complete, I'll update all the links on the website. If you want it now, just change the 0.9.19 to 0.9.20 in the download URLs.