2.2.0-rc8

Correcting bug when a token contains "|" (the pipe character).

2.2.0-rc7

The new version:

• supports approximate nearest neighbors for dense and sparse vectors;
• Indra does not depend on Mongo anymore;
• new tests, less bugs;
• new model file format (annoy and lucene for respectively dense and sparse vectors).

Annoy integration (release candidate)

2.1.0-rc

No more latest tag on docker automatically created.