message: Fix bug where Tile Inspector can't be opened on edge tiles
  Delegate to isTileVisible to reduce code duplication.
diff: @@ -289,7 +289,7 @@ void TileMap::centerMapOnTile(Tile* _t)
  */
  bool TileMap::tileHighlightVisible() const
  {
  - return NAS2D::Rectangle<int>::Create(mMapViewLocation, NAS2D::Vector{mEdgeLength - 1, mEdgeLength - 1}).contains(mMapHighlight);
  + return isVisibleTile(mMapHighlight, mCurrentDepth);
  }
  