output includes extraneous logging data when stdout is not a tty

[gilday]

By design, methadone / gli outputs extra logging information when stdout is not a tty. This is undesirable for this command line tool. For example, note the extra output when piping the output of "list" to grep

gitignores list | grep OSX
I, [2015-11-14T21:06:03.823375 #37327]  INFO -- : OSX

There must be a way to override the formatter for logging