v0.1.5

• Fixed "unknown method in_background" bug (#13)
• Replaced systemctl is-booted with a directory test (#11)
• Included max threads and available threads in status summary (#12)
• Fixed status loop race in puma single mode (bf0077b)

There is also now an example with a Dockerfile which should allow greater testing and release stability. This will probably turn into automated testing soon, but that's going to be some tricky process control work.