Merge pull request #40 from biozic/master

Fixed inversion of the synctex parameter in latexmk-based rules
First commit of our upcoming v4! :)
Fixed error in flag.
Updated bug, now we are in RC2.
Fixed .ins extension handling.
fixed German translation
Fixed a couple of bugs, added new methods, more ducks. This is RC3.
Merge branch 'master' of https://github.com/cereda/arara
Fixed absolute path check with Windows.
added rule indent
rule makeindex is now more flexible