Ref count loggers to prevent leaks.

Add restart notice to readme.
Remove preload from main.

README.md

@@ -93,6 +93,8 @@ git checkout v1.0.0
 
 `Project -> Project Settings -> Plugins -> gdlogging -> Activate`
 
+Autoloads are a bit janky so you may need to restart the editor for errors to go away.
+
 ## Licensing
 
 Marked parts are licensed under the `LICENSE-godot-logger.md` (MIT) license.

funcs/logger.gd

@@ -94,7 +94,7 @@ static func format_time_default_for_filename(p_unix_time: float) -> String:
 
 ## Base class to be inherited by sinks.
 ## All message formatting has already been done by the logger.
-class LogSink:
+class LogSink extends RefCounted:
 	## Write many log records to the sink
 	func write_bulks(p_log_records: Array[Dictionary], p_formatted_messages: PackedStringArray) -> void:
 		Log._logger_direct_console.warning("LogSink: write_bulks() not implemented.")

main_gdlogging.gd

@@ -7,15 +7,15 @@ var addons_panel_manager: Variant
 func _enter_tree() -> void:
 	add_autoload_singleton("Log", "res://addons/gdlogging/funcs/logger.gd")
 	addons_panel_manager = load("res://addons/gdlogging/addons_shared_gen/addons_panel_manager.gd").AddonsPanelManager.new(self)
-	main_panel = preload("res://addons/gdlogging/scenes_editor/ui_addon_panel.tscn").instantiate()
+	main_panel = load("res://addons/gdlogging/scenes_editor/ui_addon_panel.tscn").instantiate()
 	addons_panel_manager.add_main_panel(main_panel)
 
 func _exit_tree() -> void:
 	remove_autoload_singleton("Log")
 	addons_panel_manager.remove_main_panel()
 
-func _get_plugin_icon():
+func _get_plugin_icon() -> Texture2D:
 	return preload("res://addons/gdlogging/assets/icons_editor/plugin_icon_white.svg")
 
-func _get_plugin_name():
+func _get_plugin_name() -> String:
 	return "gdlogging"