Fully register class on register_class call

test/demo/main.gd

@@ -1,10 +1,9 @@
 extends Node
 
 func _ready():
-	# Connect signals.
-	$Button.button_up.connect($Example.emit_custom_signal, ["Button", 42])
-	$Example.custom_signal.connect(on_signal)
-
+	# Bind signals
+	$Button.button_up.connect($Example.emit_custom_signal.bind("Button", 42))
+	
 	# Call methods.
 	$Example.simple_func()
 	($Example as Example).simple_const_func() # Force use of ptrcall
@@ -23,5 +22,5 @@ func _ready():
 	prints("ANSWER_TO_EVERYTHING", $Example.ANSWER_TO_EVERYTHING)
 	prints("CONSTANT_WITHOUT_ENUM", $Example.CONSTANT_WITHOUT_ENUM)
 
-func on_signal(name, value):
+func _on_Example_custom_signal(name, value):
 	prints("Example emitted:", name, value)

test/demo/main.tscn

@@ -15,6 +15,9 @@ offset_right = 234.0
 offset_bottom = 21.0
 structured_text_bidi_override_options = []
 script = null
+__meta__ = {
+"_edit_use_anchors_": false
+}
 
 [node name="Button" type="Button" parent="."]
 offset_right = 79.0
@@ -24,3 +27,5 @@ script = null
 __meta__ = {
 "_edit_use_anchors_": false
 }
+
+[connection signal="custom_signal" from="Example" to="." method="_on_Example_custom_signal"]