fix: initialisation warnings

close issue #20

multi_user/operators.py

@@ -292,7 +292,7 @@ class SessionApply(bpy.types.Operator):
     bl_description = "Apply selected block into blender"
     bl_options = {"REGISTER"}
 
-    target = bpy.props.StringProperty()
+    target: bpy.props.StringProperty()
 
     @classmethod
     def poll(cls, context):
@@ -312,7 +312,7 @@ class SessionCommit(bpy.types.Operator):
     bl_description = "commit and push selected datablock to server"
     bl_options = {"REGISTER"}
 
-    target = bpy.props.StringProperty()
+    target: bpy.props.StringProperty()
 
     @classmethod
     def poll(cls, context):

multi_user/presence.py

@@ -129,10 +129,11 @@ class User():
 def update_presence(self, context):
     global renderer
 
-    if renderer and self.enable_presence:
-        renderer.run()
-    else:
-        renderer.stop()
+    if 'renderer' in globals():
+        if self.enable_presence:
+            renderer.run()
+        else:
+            renderer.stop()
 
 
 def update_overlay_settings(self, context):