This would make ```99_balloons``` -> ```_9_balloons```, but its still not ideal. Silently nuking user data in the response is bad, so maybe we can preserve it. Lets just prefix the key with a _ if the first character isnt POSIX compliant. That way the full key is preserved, but made posix compliant by stamping on as few characters as possible. (Special chars like ```!``` and ```-``` will still be made to ```_```). Ill open a PR onto this branch with my fix