* spot/twaalgos/car.cc: Update the max_color in apply_to_Buchi. * tests/python/car.py: Add some tests that showed this issue.
* tests/python/car.py: Add more combinaisons of options when testing CAR.
* NEWS: Mention it. * spot/twaalgos/car.cc, spot/twaalgos/car.hh, tests/python/car.py: New files. * spot/twaalgos/Makefile.am, tests/Makefile.am: Add them. * python/spot/impl.i: Include CAR. * spot/twa/acc.cc, spot/twa/acc.hh, spot/twa/twagraph.cc, spot/twa/twagraph.hh: Add supporting methods.