Meltano

Is anyone using `tap-slack` successfully? We have historically had a problem with rate limiting so had to fork it and add some `time.sleep` calls. But I'm setting it up again testing out the different variants -- and I'm now getting data mismatch errors for the `messages` stream, which seems like something others would hit, but I don't see issues in `Mashey/tap-slack` or `singer-io/tap-slack` .

```meltano              | Extraction failed (1): Errors during transform: [last_read: data does not match {'type': ['string', 'null'], 'format': 'date-time'}, : data does not match {'additionalProperties': False, 'properties': {'channel_id' ... ```

Ok, looks like I can deselect that one field that is causing issues. really love this feature of meltano

```    select:
    - channels.*
    - users.*
    - channel_members.*
    - messages.*
    - '!messages.last_read'```

I didn't know you could do that, I thought you had to use a select filter! I learned something