0.2.0

Features

• Expose prop onOuterAction for hooking onto outer actions. Useful for e.g. automatically-close-on-outer-interaction. #22. One reason this is currently hard-coded to the component rather than a simple mixin is that we want outerAction to semantically be in terms of target and popover. A conventional mixin would not know to tap into the layer system which is where Popover is rendered.