reply to message column changed

src/DB.php

@@ -319,7 +319,7 @@ class DB
             $update_id = $update->getUpdateId();
             $message_id = $message->getMessageId();
             $from_id = $from->getId();
-            $reply_to_message = $message->getReplyToMessage();
+            $reply_to_message = $message->getReplyToMessage()->getMessageId();
             $text = $message->getText();
             $audio = $message->getAudio();
             $document = $message->getDocument();

structure.sql

@@ -6,7 +6,7 @@ CREATE TABLE `messages` (
   `chat_id` bigint NOT NULL DEFAULT '0' COMMENT 'Chat identifier.',
   `forward_from` bigint NOT NULL DEFAULT '0' COMMENT 'User id. For forwarded messages, sender of the original message',
   `forward_date` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' COMMENT 'For forwarded messages, date the original message was sent in Unix time',
-  `reply_to_message` LONGTEXT COMMENT 'Message object. For replies, the original message. Note that the Message object in this field will not contain further reply_to_message fields even if it itself is a reply.',
+  `reply_to_message` bigint COMMENT 'Message is a reply to another message already stored.',
   `text` LONGTEXT COMMENT 'For text messages, the actual UTF-8 text of the message',
   `audio` TEXT DEFAULT '' COMMENT 'Audio object. Message is an audio file, information about the file',
   `document` TEXT DEFAULT '' COMMENT 'Document object. Message is a general file, information about the file',