removed all #if USE_INT_INDICES. i don't even know what that was supposed to do any more.
added more tests for FacePolygon, including testing for the correct order of vertices in polygon equality, which fails. (#30)
added more functions to arraylist and more tests while developing the proper test for FacePolygon::operator== (#30)
fixed bug in isCircularPermutation(). Tests check out now (#30)