Update 1.x.md

Author: AnidemDex

docs/changelog/1.x.md

@@ -6,6 +6,7 @@
 * **Reference hint in PortraitManager.** Now the reference rect node that were used previously is built-in directly on the node, letting you modify it directly in PortraitManager.
 * **Integration with EventSystem.** Use Textalog not only as a Dialog Node, but as a Dialog System too [#56](https://github.com/AnidemDex/Godot-DialogPlugin/pull/56).
 * **Character Inspector**. Now the character has its own inspector, to display portraits in a proper way. [#65](https://github.com/AnidemDex/Godot-DialogPlugin/pull/65)
+* **`DialogManager` node now can produce blip sounds**. We've added some useful methods to make the node "blip" on certain conditions.
 
 ### Changed:
 * **`DialogManager.text_autoscroll` will be false by default.**