Shaders are supported now. You can use them to easily change the hole look of your map. Just select the "Black and White" shader and you got a b/w map. Have a look at this image to see some shaders in action.
The next feature to be done is called "Overlays". Overlays are just simple repeated (mostly large) images drawn over the hole map. So you can add grids or paper textures to make you map look more realistic.
Then all the main features are complete. But there are still some important things left: change map size, scrolling, save, load and export the map.