Project website: http://opendatatrentino.github.io/openentity-api
- Moved SemText to its own repo: https://github.com/opendatatrentino/semtext
- moved provenance to its own repo TraceProv: https://github.com/opendatatrentino/traceprov
- renamed many classes
- switched to immutable data structures (but still keeping cumbersome Attr)
- removed useless interfaces
- removed deprecated api and guid stuff
- added prototype of mock implementation (for now it's only useful in ODR)
- Made stable enough to work in OpenDataRise 0.3.5