Fix PDF
Merge pull request #8 from ianks/make-her-work

Implement Viberti algorithm
get topics to work by adding sequence parser to each data structure
Merge pull request #9 from ianks/topics

get topics to work by adding sequence parser to each data structure
Merge branch 'master' into optimize

* master:
  get topics to work by adding sequence parser to each data structure
  Fix PDF