1.0 – Finalized development of T5 v1-based model

This release marks an important point in the development of Tensorflow-based heptabot implementation, as for now all the files have been pushed and all the known issues have been resolved. We are interested to implement syntetic training data and introduce fixes to retraining procedure in the future updates; we also, however, are interested in developing a version which could be served from CPU, and these pytorch-based implementations will be moved to 2.0 branch.