Child-components that are "illegal" within the <Map /> component break functionality.

[AustinHunt]

Proposed fix: Filter out components that are not allowed to be placed within the children props.

Current "tacky fix":

<Map>
            {tornado ? tornado.map(item => (
              const coords = {lat : item.Lat, lng : item.Lon}
              return <Marker coords={coords} icon={getImage('wind-marker.png')} />
            )) : f => {/*Return this useless empty function*/}}
</Map>