$exists options is not well interpreted in linked fields

[IonicaBizau]

After getting the response to the following request:

{
    "t": "528b7.....9e5928a1",
    "q": {
        "article.price": {
            "$exists": true
        }
    },
    "o": {
        ...
    }
}

There are documents that don't contain article.price field. I think that this happens because article.price is a linked field.

[IonicaBizau]

Fixed in the following commits:

• https://github.com/jillix/crud/commit/cdf3abe6daee4bec3be31bb2d10ff3368806781f
• https://github.com/jillix/crud/commit/c9d76e295719890615ecf26f45bbad833a9675f7