Title Case for non English titles, some more function words

[glorieux-f]

• [x] I read the README and followed the instructions.
• [x] I am sure that the used CSL metadata follows the CSL schema.
• [x] I use a valid CSL stylesheet

Bug reports:

Non English journals may publish articles in English. Language should be set to "en". If the non English title of journal is desired in title case, then the processor should know some prepositions or articles to keep in lower case.

• [citeproc-php] Doe, J. (n.d.). Article in English. Bibliothèque Nationale De France, Revue.
• [zotero] Doe, J. (n.d.). English article in a French journal. Bibliothèque Nationale de France, Revue.

Used CSL stylesheet:

apa.csl

Used CSL metadata

Please replace these lines with your used metadata, for instance:

[
{
    "id": "id0",
    "type": "article-journal",
    "container-title": "Bibliothèque nationale de France, revue",
    "language": "en",
    "title": "Article in English",
    "author": [
        {
            "family": "Doe",
            "given": "John"
        }
    ]
}
]