Add multi touch to buttons

[exussum12]

Touching two buttons at once does not work as expected

[Gadgetoid]

Thank you- though the second touch 2 coordinates should use self.state2 or it will mirror the touch/release status of the first touch. (Yes the variable naming here is a bit of a travesty)

[exussum12]

Perfect, fixed that and removed a block of if

[Gadgetoid]

Thank you!