Refactored code for TRUE multithreaded performance
startup time decreased from 2 secs to 0.2 secs
updates song time decreased from 3 secs to 0.1 secs
introduced proper and full error handler, can fully recover from errors
(including performing a full restart)
implemented web server to push updates and restart application (flask)
getting lyrics is truely mulithreaded now, all in memory.
