Git for Windows v2.19.2 demoted to "pre-release"

Team,

sorry for the inconvenience, but I had to "pull" Git for Windows v2.19.2
because of two major bugs: 32-bit Git Bash simply failed to start, and all
operations using git:// URLs were broken.

This close to v2.20.0, I was uncomfortable pushing yet another upgrade to
users that would have been made obsolete a mere week from now.

I apologize for the trouble,
Johannes