Pretty printing build info

[jfcameron]

Feature suggestion

Purpose:
to conveniently print build info fields to standard out, to file, render as JSON and send over network etc.

Implementation:
static public function "Pretty Print" with lambda parameter of form: (final Field[]) -> void.
Lambda allows for user-defined print behaviour.
Additionally offer 1 overload: parameterless, which simply writes all fields to standard out as "${field.name}: ${field.value}\n"...