GUI_Object tap and hold

Add tap and hold for GUI_Object. After item is clicked, timer starts to
run. If after timer ended, item is still clicked it means we are
holding it. Object registers “pointer up” event to check is item
released.
GUI_Object tap and hold

Fix tabs to spaces. Add me.timer.clearTimeout to onDestroyEvent
GUI_Object tap and hold

once more, tabs to spaces
GUI_Object tap and hold

tabs to spaces
Merge pull request #496 from juhanapaavola/1.0.x

added tap and hold feature to the `me.GUI_Object` object (juhanapaavola)