Make pts quiet by default, add --verbose (fix #125)
Make pts quiet by default, add --verbose (fix #125)

It seems like --quiet and --verbose already do what Tillmann asks for --
I've grepped for calls to output, and all ones either:

* use output (which checks the option),
* are in Control.Monad.Log (only used when debugging),
* are in PTS.Transform, in package-info.hs, or for help (not part of the
  normal output of pts).

So we just need to switch the default and add --verbose, which this
commit does.

Blaisorblade/pts,Toxaris/pts