Develop

* Merge pull request #36 from FenrirUnbound/feature/prune-constants
* Tests for constants
* Merge pull request #35 from FenrirUnbound/feature/unicode
* Updated strings to unicode strings.
* Merge pull request #34 from FenrirUnbound/feature/param-check
* Simplified parameter checking with PARAM_TYPES constants
* added class for param types