By default outputs contains "stdout", which prints the logs at the
output of the process. To add a log file as output, the path should be
added at the outputs array. To avoid printing the logs but storing them
on a file, can use []string{"pathtofile.log"}

Update log package with fields & file log, and update constants in the
repository code to be MixedCase.

resolves #91, resolves #92, resolves #95