better bibtex post-script

bbt.js

// https://github.com/retorquere/zotero-better-bibtex/issues/1759
switch (Translator.header.label) {
  case "Better BibLaTeX":
    if (reference.has.keywords) {
      reference.has.keywords.name = "tags";
    }
    if (reference.has.title) {
      const titles = reference.has.title.value.match(/(.+?)([?:;])(.*)/);
      if (titles) {
        let title = titles[1] + (titles[2] === "?" ? "?" : "");
        reference.add({
          name: "title",
          value: title,
        });
        reference.add({
          name: "subtitle",
          value: titles[3].trim(),
        });
      }
    }
}