updated init because of new modules aka moved functions

stimuli/illusions/__init__.py

@@ -1,6 +1,7 @@
 from .benary_cross import benarys_cross
 from .bullseye import bullseye_stimulus
 from .checkerboards import *
+from .circular import *
 from .cornsweet import cornsweet
 from .cube import cube_illusion
 from .dungeon import dungeon_illusion
@@ -11,4 +12,5 @@
 from .rings import ring_stimulus
 from .sbc import *
 from .todorovic import *
+from .wedding_cake import *
 from .whites import *