Fixed pointerType not being given on IE10
Adjusted touch starting action to fit IE11 and conventional mouse event action (now the event order is pointerover->pointerenter->pointerdown)
Fixed event bubbling problem on IE10
NOTE: POINTER_TYPE_XXX constant variables are removed as of v1.3.1 as the specification doesn't have them. Please use strings (including "mouse" / "touch" / "pen") instead of those constants to identify pointer types.