Presence update events not showing game if custom status is active

[heydabop]

Looks like Discord will send multiple "games" if the user has a custom status and starts playing a game. Would adding an activities field to Presence be a way to tackle this? Hoping to look into it myself soon.

Example debug event from discordgo

{
    "user": {
        "id": "..."
    },
    "status": "online",
    "roles": [
        "..."
    ],
    "nick": "...",
    "guild_id": "...",
    "game": {
        "type": 4,
        "name": "Custom Status",
        "id": "custom",
        "emoji": {
            "name": "moon2DOIT",
            "id": "508113472811302923",
            "animated": false
        },
        "created_at": 1574802972622
    },
    "client_status": {
        "desktop": "online"
    },
    "activities": [
        {
            "type": 4,
            "name": "Custom Status",
            "id": "custom",
            "emoji": {
                "name": "moon2DOIT",
                "id": "508113472811302923",
                "animated": false
            },
            "created_at": 1574802972622
        },
        {
            "type": 0,
            "timestamps": {
                "start": 1574803206220
            },
            "name": "Emacs",
            "id": "7ed35de5c4f795d3",
            "created_at": 1574803206272
        }
    ]
}

How it appears as a Game on Presence

{Name:Custom Status Type:4 URL: Details: State: TimeStamps:{EndTimestamp:0 StartTimestamp:0} Assets:{LargeImageID: SmallImageID: LargeText: SmallText:} ApplicationID: Instance:0}

[Toyz]

This should be resolved in the develop branch as it was merged from #730