Importer: Remove console spam for missing rna ui property

__init__.py

@@ -40,6 +40,15 @@ class IMPORT_OT_egg(bpy.types.Operator, ImportHelper):
     filename_ext = ".egg"
     filter_glob = props.StringProperty(default="*.egg;*.egg.pz;*.egg.gz", options={'HIDDEN'})
 
+    """
+    Note:
+    Blender versions >= 2.8 use Python's type annotations (PEP 526), meaning we need to use colons instead of equals.
+    If we do not use colons for >= 2.8, it may still run, but can spam the console with something like:
+    rna_uiItemR: property not found: IMPORT_SCENE_OT_egg.auto_bind
+
+    In <2.8 versions of Blender, we must use = for assigning custom properties, otherwise we will get a SyntaxError.
+    """
+
     if bpy.app.version < (2, 80):
         directory = props.StringProperty(name="Directory", options={'HIDDEN'})
         files = props.CollectionProperty(type=bpy.types.OperatorFileListElement, options={'HIDDEN'})
@@ -52,16 +61,28 @@ class IMPORT_OT_egg(bpy.types.Operator, ImportHelper):
         except SyntaxError:
             pass
 
-    load_external = props.BoolProperty(
-        name="Load external references",
-        description="Loads other .egg files referenced by this file as separate scenes, "
-                    "and instantiates them using DupliGroups."
-    )
-    auto_bind = props.BoolProperty(
-        name="Auto bind",
-        default=True,
-        description="Automatically tries to bind actions to armatures."
-    )
+    if bpy.app.version >= (2, 80):
+        load_external: props.BoolProperty(
+            name = "Load external references",
+            description = "Loads other .egg files referenced by this file as separate scenes, "
+                          "and instantiates them using DupliGroups."
+        )
+        auto_bind: props.BoolProperty(
+            name = "Auto bind",
+            default = True,
+            description = "Automatically tries to bind actions to armatures."
+        )
+    else:
+        load_external = props.BoolProperty(
+            name="Load external references",
+            description="Loads other .egg files referenced by this file as separate scenes, "
+                        "and instantiates them using DupliGroups."
+        )
+        auto_bind = props.BoolProperty(
+            name="Auto bind",
+            default=True,
+            description="Automatically tries to bind actions to armatures."
+        )
 
     def execute(self, context):
         context = importer.EggContext()