Support new thread and message attributes (position, message_count, total_message_sent)

[onerandomusername]

Summary

https://github.com/discord/discord-api-docs/pull/5206

What is the feature request for?

The core library

The Feature

Message.position, should probably default to None outside of forum channels, or we could think about using -1 so its always an integer. Thread.message_count Thread.total_message_sent

However, there is a small implementation detail here: Should we increment the message_count and total_message_sent variables when we receive a message_create event for the thread? I believe we should.

In addition, when we receive a message_delete event in a thread, we should decrement message_count if the thread is cached whether or not the message is cached.

[rmblau]

I shall take a look at this.

[onerandomusername]

Assigned you.

[onerandomusername]

@rmblau are you still interested in implementing this feature?

[rmblau]

Yes I am, I just got back from family vacation and can take a look at it this week.

[onerandomusername]

Because there's no progress on this, I'm moving it back to up for grabs.

[Snipy7374]

I shall take a look at this.