Println behavior for collections, strings and gstrings [minor breaking change]

import org.codehaus.groovy.runtime.InvokerHelper

def g = 'g'
def string = 'groovy'
def gString = "${g}roovy"
println string // groovy
println gString // groovy
println([string]) // ["groovy"]  !!!!! This should be [groovy]
println([string].toString()) // [groovy]
System.out.println([string]) // [groovy]
println([gString]) // [groovy]

// The culprit
assert '"groovy"' == InvokerHelper.format(string, true)