v3.3.0

• implement endpoint api.events()
• add ChatChannel.message_length_limit
• add Build.youtube_id
• add RoomCategory.FEATURED_ARTIST
• add ChannelType.ANNOUNCE
• mark UserCompact.default_group as optional
• move Beatmapset.pack_tags to BeatmapsetCompact
• move Beatmapset.current_nominations to BeatmapsetCompact
• add proper model for UserStatistics.variants (breaking change if you previously consumed the raw json of this attribute)
• add proper model for ForumTopic.poll (breaking change if you previously consumed the raw json of this attribute)
• rename BeatmapDifficultyAttributes attributes for typos: approach_raty to approach_rate and great_hit_windoy to great_hit_window.
• remove unused MessageType.{DISQUALIFY, NOMINATION_RESET}
• remove deprecated and no longer returned ChatChannel.first_message_id attribute