Option for source_location

[allcentury]

I realize this changes the output, but would you be open to including the source_location, is that possible? ie:

  %   cumulative   self              self     total
 time   seconds   seconds    calls  ms/call  ms/call  name  source_location
197.51    16.59     16.59        2  8295.78  8295.78  Thread::Queue#pop  /some/gem/file.rb:45

I realize there could be multiple source locations for a single name.