pyFileFixity v2.0.0 beta 1

Major new codebase for pyFileFixity. The project is now most likely stable, and speed enhancements are enough to make the usage practical, and the Reed-Solomon ecc libraries are rock solid (unit tested at more than 85%, these are the most unit tested reed solomon libraries in the open source world currently).

The file formats for the ecc files should be frozen now (there won't be any change), so you can already generate your ecc files now, you will be able to use them with later versions of pyFileFixity without a problem. CAUTION: the format has changed since the last releases, so do not try to use old ecc files with this release, you should generate a new ecc file!

There are a few enhancements at repair and some additional tools I'd like to make before tagging this project as stable. These planned enhancements are described in TODO.md, such as the replication repair tool. The enhancements will be exclusively be done on repairing processes, not on generation, so that's why the ecc file format won't change (and you will benefit of the future repairing enhancements even if you generate your ecc files now).