Include stacktrace in error message when checkers throw an exception.
An improvement to comment style checker to ignore comments of ///+ style.
Add support for 'quiet' output in TextOutput
Scala style to ensure a space after colon.

Valid styles:

val a: Int = 0
def b(c: Int): Int = 1

Invalid styles:

val a:Int = 0
val b : Int = 1
def c(d:Int) :Int = 2
etc..