LightmapManager is an Editor utility that allows you from saving and loading your single\dual lightmaps with all lightmap settings associated with the selected objects and even the atlas itself, setting the size of the lightmap and even changing it for the current selected object or for all objects
If you are interested check it out at the Uniy3D Asset Store
Mixed Dimensions
I think some people were waiting for something like this 
The movie is not very clear though, only to the end you show what your software really does.
I’m interested but I don’t see any list of features, a video explaining exactly what the add-on does would be great.
We will do one but you can read This Article here i have wrote about it and if you have any thoughts or things you want to see in it so please tell us