Create Track Map

Finally, a stable release!

• Each dimension is now its own separate layer, and you can switch between them using the layer button on the top right of the screen. Check the README for more information on configuring this.
  
• Clicking on a portal icon now also automatically switches to the other dimension.
• Trains crossing portals are now shown properly as heading into the portal and emerging from the other portal, rather than jumping across the screen.