Add built-in citation support using new citeproc library.

This deprecates the use of the external pandoc-citeproc
filter; citation processing is now built in to pandoc.

* Add dependency on citeproc library.
* Add Text.Pandoc.Citeproc module (and some associated unexported
  modules under Text.Pandoc.Citeproc).  Exports `processCitations`.
  [API change]
* Add data files needed for Text.Pandoc.Citeproc:  default.csl
  in the data directory, and a citeproc directory that is just
  used at compile-time.  Note that we've added file-embed as a mandatory
  rather than a conditional depedency, because of the biblatex
  localization files. We might eventually want to use readDataFile
  for this, but it would take some code reorganization.
* Text.Pandoc.Loging: Add `CiteprocWarning` to `LogMessage` and use it
  in `processCitations`. [API change]
* Add tests from the pandoc-citeproc package as command tests (including
  some tests pandoc-citeproc did not pass).
* Remove instructions for building pandoc-citeproc from CI and
  release binary build instructions.  We will no longer distribute
  pandoc-citeproc.
* Markdown reader: tweak abbreviation support.  Don't insert a
  nonbreaking space after a potential abbreviation if it comes right before
  a note or citation.  This messes up several things, including citeproc's
  moving of note citations.
* Add `csljson` as and input and output format. This allows pandoc
  to convert between `csljson` and other bibliography formats,
  and to generate formatted versions of CSL JSON bibliographies.
* Add module Text.Pandoc.Writers.CslJson, exporting `writeCslJson`. [API
  change]
* Add module Text.Pandoc.Readers.CslJson, exporting `readCslJson`. [API
  change]
* Added `bibtex`, `biblatex` as input formats.  This allows pandoc
  to convert between BibLaTeX and BibTeX and other bibliography formats,
  and to generated formatted versions of BibTeX/BibLaTeX bibliographies.
* Add module Text.Pandoc.Readers.BibTeX, exporting `readBibTeX` and
  `readBibLaTeX`. [API change]
* Make "standalone" implicit if output format is a bibliography format.
  This is needed because pandoc readers for bibliography formats put
  the bibliographic information in the `references` field of metadata;
  and unless standalone is specified, metadata gets ignored.
  (TODO: This needs improvement. We should trigger standalone for the
  reader when the input format is bibliographic, and for the writer
  when the output format is markdown.)
* Carry over `citationNoteNum` to `citationNoteNumber`.  This was just
  ignored in pandoc-citeproc.
* Text.Pandoc.Filter: Add `CiteprocFilter` constructor to Filter.
  [API change] This runs the processCitations transformation.
  We need to treat it like a filter so it can be placed
  in the sequence of filter runs (after some, before others).
  In FromYAML, this is parsed from `citeproc` or `{type: citeproc}`,
  so this special filter may be specified either way in a defaults file
  (or by `citeproc: true`, though this gives no control of positioning
  relative to other filters).  TODO: we need to add something to the
  manual section on defaults files for this.
* Add deprecation warning if `upandoc-citeproc` filter is used.
* Add `--citeproc/-C` option to trigger citation processing.
  This behaves like a filter and will be positioned
  relative to filters as they appear on the command line.
* Rewrote the manual on citatations, adding a dedicated Citations
  section which also includes some information formerly found in
  the pandoc-citeproc man page.
* Look for CSL styles in the `csl` subdirectory of the pandoc user data
  directory.  This changes the old pandoc-citeproc behavior, which looked
  in `~/.csl`.  Users can simply symlink `~/.csl` to the `csl`
  subdirectory of their pandoc user data directory if they want
  the old behavior.
* Add support for CSL bibliography entry formatting to LaTeX, HTML,
  Ms writers.  Added CSL-related CSS to styles.html.

1 files changed, 70 insertions, 0 deletions

diff --git a/test/command/biblatex-geer.md b/test/command/biblatex-geer.md
new file mode 100644
index 000000000..c3acec4fa
--- /dev/null
+++ b/test/command/biblatex-geer.md
@@ -0,0 +1,70 @@
+```
+% pandoc -f biblatex -t markdown -s
+@comment{
+
+Adapted from biblatex-example.bib
+
+Formatted with pandoc and chicago-author-date.csl, 2013-10-23:
+
+(Geer 1985)
+
+Geer, Ingrid de. 1985. “Earl, Saint, Bishop, Skald – and Music: The
+Orkney Earldom of the Twelfth Century. A Musicological Study.” PhD
+thesis, Uppsala: Uppsala Universitet.
+
+
+Formatted with pandoc and apa.csl, 2013-10-23:
+
+(Geer, 1985)
+
+Geer, I. de. (1985). *Earl, saint, bishop, skald – and music: The Orkney
+earldom of the twelfth century. A musicological study* (PhD thesis).
+Uppsala Universitet, Uppsala.
+
+
+}
+
+@Thesis{geer,
+  author       = {de Geer, Ingrid},
+  title        = {Earl, Saint, Bishop, Skald~-- and Music},
+  type         = {phdthesis},
+  institution  = {Uppsala Universitet},
+  date         = 1985,
+  subtitle     = {The {Orkney} Earldom of the Twelfth Century. {A} Musicological
+                  Study},
+  location     = {Uppsala},
+  options      = {useprefix=false},
+  hyphenation  = {british},
+  annotation   = {This is a typical thesis entry for a PhD thesis. Note
+                  the type field in the database file which uses a
+                  localization key. Also note the format of the printed name and
+                  compare the useprefix option in the options
+                  field as well as vangennep},
+}
+
+^D
+---
+nocite: '[@*]'
+references:
+- annote: This is a typical thesis entry for a PhD thesis. Note the type
+    field in the database file which uses a localization key. Also note
+    the format of the printed name and compare the useprefix option in
+    the options field as well as vangennep
+  author:
+  - dropping-particle: de
+    family: Geer
+    given: Ingrid
+  genre: PhD thesis
+  id: geer
+  issued: 1985
+  language: 'en-GB'
+  publisher: Uppsala Universitet
+  publisher-place: Uppsala
+  title: 'Earl, saint, bishop, skald -- and music: The Orkney earldom of
+    the twelfth century. A musicological study'
+  title-short: 'Earl, saint, bishop, skald -- and music'
+  type: thesis
+---
+
+
+```