Output QuickCheck's test case classifications

[jstolarek]

QuickCheck allows to classify test cases using classify function. When running such property with quickCheck function the output is:

+++ OK, passed 100 tests (29% Short)

However, test-framework-quickcheck2 only outputs [OK, passed 100 tests], which forces me to run my tests manually to check whether I get the correct test distribution. It would be good if test-framework-quickcheck2 could display that information as well.