v2.0 Release Candidate 1

• Replaces MongoDB local storage with Amazon S3 remote storage.
• Stricter testing and runtime assertions with type hinting.
• Refactored directory structure, now all files are placed in root.

This version will be deployed at MatrUFSC as soon as enrollment period is over.

First stable version

The code by now is pretty stable and well tested. It has 100% test coverage, and is being used daily at MatrUFSC for the past few weeks without failure and error reports so far. It should be considered as the first final version.