handle guzzle5 exceptions

[younes0]

This will prevent Guzzle to fetch data-based image urls:

  [InvalidArgumentException]
  Unable to parse malformed url: data:///image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==

[oscarotero]

Hi.
I'm not sure about this. Embedded images still being images, so they should be taken into account, like any other url. In fact, I just made a commit to fix this. You can check it here: https://github.com/oscarotero/Embed/blob/master/src/ImageInfo/Curl.php#L173
If the image is just downloaded (because it's embedded in the html), why not use it?

[younes0]

Hello! You're right about the embedded images, will check your commit today and fix my PR

[younes0]

toi avoid duplication, maybe should we place getEmbeddedImageInfo() in a ImageInfoTrait.php or elsewhere (and add getEmbeddedImageInfo() to ImageInfoInterface) ?

[oscarotero]

Yes, you're right. I just moved the function to a Trait, so you can reuse it in the Guzzle5 implementation.
I don't think this should be added to ImageInfoInterface, because it's internal stuff, used by getImagesInfo method.

[younes0]

see #79