fixes new merge lower name node format

0.3.0

- fix: viewlayer exclude attribution error
- fix: force PNG 8bit 15% compression for output settings
- change: GP dopesheet merge ops -> viewlayer merge instead of creating alphaover node
- feat: batch to_lower name
- feat: copy active output node format to selected

OP_add_layer.py

@@ -27,7 +27,7 @@ class GPEXP_OT_add_layer_to_render(bpy.types.Operator):
             if not l.select:
                 if not l.viewlayer_render:
                     # TODO : need to link, can reaise error if object is not linked in Render scene yet
-                    l.viewlayer_render == fn.get_view_layer('exclude')
+                    l.viewlayer_render == fn.get_view_layer('exclude').name
                 continue
             gen_vlayer.get_set_viewlayer_from_gp(ob, l)
             
@@ -54,7 +54,7 @@ def export_gp_objects(oblist, exclude_list=[]):
             # if l.hide: 
             #     continue
             if l.hide or any(x + '_' in l.info for x in exclude_list): # exclude hided ?
-                l.viewlayer_render = fn.get_view_layer('exclude') # assign "exclude"
+                l.viewlayer_render = fn.get_view_layer('exclude').name # assign "exclude"
                 continue
 
             _vl, _cp = gen_vlayer.get_set_viewlayer_from_gp(ob, l) # scene=fn.get_render_scene())