New version 1.2 and also on Source Forge
-add localization (only French);
-add icon;
-now work including on new file after room creation;

@bdfd
You've right, on some localization don't work.
I've try to fix it in this version.

@UbuntuBirdy
I intend to add perimeter and walls surface surround rooms
with and without hols (doors and windows) to have more useful information.
But all under the same check box.