upgrade citeproc
upgrade citeproc, part 2
upgrade citeproc, part 3
upgrade citeproc, part 4
integrate citeproc helpers with citation helpers and move citeproc definitions into style folder
read authorDate information directly from XML
make citation styles configurable, part 1
use style definitions that don't throw error
make citation styles configurable, part 2
make citation styles configurable, part 3
add more citation styles