Apologies for the extended inactivity. I've been distracted with other things lately, and maintaining bchunk hadn't been high on my priorities list.. One factor contributing to that was the lack of any activity (bug reports, new releases) until tbm reported this.
Perhaps it is somewhat telling that I found out about this from a friend rather than from keeping an eye on the project. Nevertheless, I am indifferent to the possibility of someone else taking over maintainership of this package. However, before this happens, having my packages orphaned for me has been a bit of a wake-up call, and I've prepared an upload of bchunk with the new upstream version integrated. It's updated to latest policy and lintian clean. I don't think it'll be a problem to upload this to unstable tonight. Let me know if you are still interested in maintaining this, otherwise I'll continue maintaining it. Thanks, -Sam