add v3

Author: chessai

.travis.yml

@@ -139,7 +139,7 @@ script:
   # build & run tests, build benchmarks
   - ${CABAL} v2-build $WITHCOMPILER ${TEST} ${BENCH} all | color_cabal_output
   # Testing...
-  - ${CABAL} v2-test $WITHCOMPILER ${TEST} ${BENCH} all | color_cabal_output
+  - ${CABAL} v2-test -v3 $WITHCOMPILER ${TEST} ${BENCH} all | color_cabal_output
   # cabal check...
   - (cd ${PKGDIR_arrayfire} && ${CABAL} -vnormal check)
   # haddock...