can be cleaned up properly when the Python reference to it is released. Also fixed wx.FutureCall so that its timer can be restarted. Souped up the Timer demo to show and explain the various ways to use a wx.Timer. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26033 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775