cannot select an item during the open animation

[smart-fun]

The opening animation takes time (like 2 seconds), and this is not possible to select anything during this time. It can be frustrating when the animation is almost finished (the animation seems finished) but the selection does not work.

[giofid]

As suggested by @mishamoe in #84 you have to change animation options to allowUserInteraction in showMenu() method to solve the problem.