I just purchased an Ubertooth One and it came in the mail today, pumped to play around with it! I was excited to find the project. It fills in a huge gap of commodity bluetooth sensing.
In downloading the ubertooth code, I stumbled in to your gr-bluetooth code and then just so happened to find this thread active here. You should consider putting gr-bluetooth up on CGRAN (
https://www.cgran.org). It's where a lot of GNU Radio users go to find projects, and I know that this is one a lot of people would like to use, and possibly keep up to date!