section-bibliographies 1.0.0

• Rewrote and restructured filter, making use of newer pandoc
  features.

• Allow configuration via section-bibliographies metadata map.

• The bibliography files are read just once, and not repeatedly
  for each section.

• Disambiguate reference identifiers. This avoids problems when
  the same reference is cited in different sections.

• No longer cleanup previous citeproc runs by default. Set
  section-bibliographies.cleanup-first to true to restore the
  previous behavior.