[*] update news
[features,conf] configure default font features through configuration file
[*] update news
[color] set color callback according to configuration
[colors] fix logging
[features,conf] generalize feature option parsing
[doc] describe feature settings and config file syntax in manpage
[conf] use hash tables for default feature lists
Merge pull request #227 from phi-gamma/texlive2014

Allow setting default font features in configuration file