language field is missing in lookup_release_by_id function

[funkyshab]

For some reason, the lookup_release_by_id function does not return the language of a release. I assume this was overseen as far as yet. However, the language of a release could be a valuable information for some applications.

Example API request:
https://musicbrainz.org/ws/2/release/32385e9e-51cd-3d5e-8d56-2fdc354a166a
language information together with script information can be found in the XML response here:

<text-representation>
<language>eng</language>
<script>Latn</script>
</text-representation>

These are indeed valid database fields, compare the documentation on releases here:
https://musicbrainz.org/doc/Release

You can also see that the musicbrainz website uses the same information here (right hand side):
https://musicbrainz.org/release/32385e9e-51cd-3d5e-8d56-2fdc354a166a