Thank you for the great plugin. Not sure if this is even being supported any longer, but figured I'd give it a shot.
You use the term "Bibliography", but really it is references as there is no way to add something to the bibliography that is not referenced inline. Or is there?
It would be great to have a way to add a non-referenced work in the text as part of the Bibliography.
Also it would be great to change the text/font of the heading as really it is "References" that technically should be used.
References vs Bibliography:
References usually come at the end of a text (essay or research report) and should contain only those works cited within the text. So, use the term 'References' to cover works cited, and 'Additional Bibliography' to refer to works read as general background.
A Bibliography is any list of references at the end of a text, whether cited or not. It includes texts you made use of, not only texts you referred to in your paper, but your own additional background reading, and any other articles you think the reader might need as background reading.