Add delimiter chicago-annotated-bibliography.csl

The CMoS specification for notes is vague. However, the present behaviour is to set annotations immediately after the bibliographic data with no delimiter. I have shifted the note so that instead of, e.g.

“Messiah — A Christ‐Mass Song.” Autograph. Nanki Music Library, Tokyo, n.d. N-3 30Attributed to William Sharp.

we have:

“Messiah — A Christ‐Mass Song.” Autograph. Nanki Music Library, Tokyo, n.d. N-3 30. Attributed to William Sharp.