Merge pull request #1 from bredikhin/master

Dependencies updated.
Merge pull request #2 from bredikhin/master

Dependency update.
Merge pull request #3 from bredikhin/master

Dependencies fix.
Merge pull request #4 from bredikhin/master

Fixed for the latest version of Koa.
Dependencies updated.
Dependencies updated.
Dependencies updated.
Dependencies updated.
Swig and coveralls updated.