Per the conversation on the devel thread, I'm creating new latest releases of several modules. This one has been stable for quite a long time...
To take advantage of the new searching, you should:
stable 5.x release
Stable 4.7 version
The new improved views fastsearch development is mostly done. It’s time for testing and fixing!
To use the 5.x-dev branch, you must:
4.7 development version