Some refactoring: manager no longer keeps instances of worker classes, which allows the ZF service manager to control whether these are reused or not (using shared: true/false). WorkerInterface is now enfored for worker classes.
Updated README
Tweak to README formatting
Added command line example
Undid repository additions in composer.json
Corrected project name in composer.json
Corrected dependency in composer.json
Added missing namespace statement
Fixed interface class name in worker check
Copied start_lib_worker function over from the parent class in order to remove the error supression
comoser json fix