Made each logger commit to their own file. This makes it easier to ch…

[Jwdegames]

…eck which each program was doing. Also, allow logger to be run in parallel.

Note: For in the future, when we decide to spawn child threads/ processes, we need to consider whether to make new loggers for them as well.

[JeremyEastham]

This section of the Python documentation contains a couple of sample logging synchronization implementations: https://docs.python.org/3/howto/logging-cookbook.html#logging-to-a-single-file-from-multiple-processes