Use latest citeproc.

This fixes a problem with author-in-text citations for references
including both an author and an editor. Previously, both were
included in the text, but only the author should be.

Closes #6765. Added a test.

cabal.project

@@ -7,4 +7,5 @@ package pandoc
 source-repository-package
     type: git
     location: https://github.com/jgm/citeproc
-    tag: 0.1.0.2
+    tag: 3230fb6fa1beff3e27389be20217a31d3c1207e9
+

stack.yaml

@@ -22,7 +22,8 @@ extra-deps:
 - commonmark-0.1.0.2
 - commonmark-extensions-0.2.0.1
 - commonmark-pandoc-0.2.0.1
-- citeproc-0.1.0.2
+- git: https://github.com/jgm/citeproc
+  commit: 3230fb6fa1beff3e27389be20217a31d3c1207e9
 
 ghc-options:
    "$locals": -fhide-source-paths -Wno-missing-home-modules

test/command/6765.md

@@ -0,0 +1,31 @@
+```
+% pandoc --citeproc -t plain
+@book_chapter_1 [55] says blah.
+
+---
+csl: command/chicago-fullnote-bibliography.csl
+references:
+- id: book_chapter_1
+  author:
+    - family: Author
+      given: Ann
+  container-title: A book
+  editor:
+    - family: Editor
+      given: Edward
+  issued: 2014
+  page: 48-67
+  publisher: A publisher
+  publisher-place: A place
+  title: A book chapter
+  type: chapter
+...
+^D
+Ann Author[1] says blah.
+
+Author, Ann. “A Book Chapter.” In A Book, edited by Edward Editor,
+48–67. A place: A publisher, 2014.
+
+[1] “A Book Chapter,” in A Book, ed. Edward Editor (A place: A
+publisher, 2014), 55.
+```