Eisvogel (Version 1.6.0)

• Merged changes from the pandoc default LaTeX template (https://github.com/jgm/pandoc/blob/master/data/templates/default.latex).
  • This merge should fix problems related to using CSL bibliographies (#201).
• Added documentation about common errors to the readme.
• The command \thedate can be used in the source document or metadata fields (#163).