In order of helping and advising:
    
- 
          Great thanks to Bjorn Reese for highlighting the async-signal-safety issues.
        
- 
          Great thanks to Nat Goodspeed for requesting boost::stacktrace::framelike class.
- 
          Great thanks to Niall Douglas for making an initial review, helping with
          some platforms and giving great hints on library design.
        
- 
          Great thanks to all the library reviewers.