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/db.py

@@ -75,13 +75,12 @@ class DB:
                         if string.__contains__("UPDATE ") or string.__contains__("INSERT "):
                             conn.commit()
                     except Exception as e:
-                        raise SqlException("SQL Error: '%s' for '%s' [%s]" % (
-                            str(e), sql, ", ".join(map(lambda x: str(x), params)))) from e
+                        raise SqlException( f"SQL Error: '{str(e)}' for '{sql}' "
+                                            f"[{', '.join(map(lambda x: str(x), params))}]") from e
                     elapsed = time.time() - start_time
                     result = callback(cur)
             if elapsed > 5:
-                self.logger.warning("slow query (%fs) '%s' for params: %s" % (elapsed, sql, str(params)))
-
+                self.logger.warning(f"slow query ({elapsed:f}s) '{sql}' for params: {str(params)}")
         return result
 
     def query_single(self, sql, params=None, extended_like=False) -> DictObject: