Voice State Update Event Should Clarify Which Channel Was Left

[Skillz4Killz]

Am hoping to eliminate having to store voice states for every single user on every single channel in every single server just for determining which channel the user left.

Use Case: server logs feature

Potential Solution: Add a previous_channel_id property to VOICE_STATE_UPDATE event

// User joined a channel
{
  channel_id: "123",
  previous_channel_id: null,
}

// User left a channel
{
  channel_id: null,
  previous_channel_id: "123",
}

// User switched channels
{
  channel_id: "123",
  previous_channel_id: "456",
}

[ghost]

I would assume this falls under #3272?