recent features from futhark git (#922c76)

Markdown diffs with boldface

better compatibility with python 2 + 3

extra bibtex fields for arxiv, etc

caching of bibkeys

updated to mdwc v1.1

word count utility for markdown with YAML

add support for newer versions of bibtexparser

fix logger warning

remove dead code

tablet formula

skip bib generation for empty library

include cite keys with periods

fixed copyright year

links and formatting

added link for git version

initial commit