Standardize linebreak behavior

static/koboldai.js

@@ -6991,4 +6991,12 @@ function showGeneratedWIData(data) {
 		world_info_data[data.uid].manual_text = data.out;
 		send_world_info(data.uid);
 	}
-}
+}
+
+$el(".gametext").addEventListener("keydown", function(event) {
+	if (event.key !== "Enter") return;
+	// execCommand is deprecated but until Firefox supports
+	// contentEditable="plaintext-only" we're just gonna have to roll with it
+	document.execCommand("insertLineBreak");
+	event.preventDefault();
+});