Rewrite tests
Fix broken travis
Add support for line numbers
Extend context.line by start and end
Update to 0.4.0
Merge
Merge branch 'develop-0.4.0'

* develop-0.4.0:
  Update to 0.4.0
  Extend context.line by start and end
  Add support for line numbers
  Fix broken travis
  Rewrite tests