Check if TileManager exists before attaching (for OL v <= 2.12). Set fallTrhough to true as 2.12 -> 2.13 changes the default value to false.
Check if TileManager exists before attaching (for OL v <= 2.12). Set fallTrhough to true as 2.12 -> 2.13 changes the default value to false.

unchartedsoftware/aperture-tiles,unchartedsoftware/aperture-tiles,unchartedsoftware/aperture-tiles,unchartedsoftware/aperture-tiles,unchartedsoftware/aperture-tiles