Ah fun! Discovered that `INFO_MT_mesh_add` was replaced with `VIEW3D_MT_mesh_add` when adding an item to the mesh menu. Couldn’t find documentation on this but at least the templates in the text editor are up to date.
So old code for registering a module now changes to adding a class.
Old way:
def register():
bpy.utils.register_module(__name__)
bpy.types.INFO_MT_mesh_add.append(menu_func)
def unregister():
bpy.utils.unregister_module(__name__)
bpy.types.INFO_MT_mesh_add.remove(menu_func)
New Way:
def register():
from bpy.utils import register_class
register_class(ClassName)
bpy.types.VIEW3D_MT_mesh_add.append(menu_func)
def unregister():
from bpy.utils import unregister_class
unregister_class(ClassName)
bpy.types.VIEW3D_MT_mesh_add.remove(menu_func)
