Added the option to !opt-in/opt-out [onlinebot only]

Fixed command & event threading
Events are now threaded by event_type (i.e. all buddy_logon events get ran in the same one)
Added default preferences
Fixed recipe loading for multiple installs (i.e. on different machines)

core/chat_blob.py

@@ -1,9 +1,9 @@
 class ChatBlob:
-    def __init__(self, title, msg):
+    def __init__(self, title, msg, prefix="", suffix=""):
         self.title = title
         self.msg = msg.strip("\n")
-        self.page_prefix = ""
-        self.page_postfix = ""
+        self.page_prefix = prefix
+        self.page_postfix = suffix
 
     def __str__(self):
         return f"ChatBlob('{self.title}', '{self.msg}')"