We just published our Debug Proxy based on Go, pretty fast and stable for us, tested only with PhpStorm en Flow master, 3.0 and 2.3.
Warning currently require a patch for Flow: https://review.typo3.org/#/c/40794
Feel free to open issue, send beers or just comments and improvement suggestions are welcome as usual
Typical output of the proxy in verbose mode, can even be used to learn our xdebug work 
