v6.3.0

• Added support for Topics in Groups.
• Added the field is_forum to the class Chat.
• Added the fields is_topic_message and message_thread_id to the class Message to allow detection of messages belonging to a forum topic and their message thread identifier.
• Added the classes ForumTopicCreated, ForumTopicClosed, and ForumTopicReopened and the fields forum_topic_created, forum_topic_closed, and forum_topic_reopened to the class Message. Note that service messages about forum topic creation can't be deleted with the deleteMessage method.
• Added the field can_manage_topics to the classes ChatAdministratorRights, ChatPermissions, ChatMemberAdministrator, and ChatMemberRestricted.
• Added the parameter can_manage_topics to the method promoteChatMember.
• Added the methods createForumTopic, editForumTopic, closeForumTopic, reopenForumTopic, deleteForumTopic, unpinAllForumTopicMessages, and getForumTopicIconStickers for forum topic management.
• Added the parameter message_thread_id to the methods sendMessage, sendPhoto, sendVideo, sendAnimation, sendAudio, sendDocument, sendSticker, sendVideoNote, sendVoice, sendLocation, sendVenue, sendContact, sendPoll, sendDice, sendInvoice, sendGame, sendMediaGroup, copyMessage, forwardMessage to support sending of messages to a forum topic.
• Added support for Multiple Usernames via the field active_usernames in the class Chat.
• Added the field emoji_status_custom_emoji_id to the class Chat.