Changing last test data for clusters according to backend changes

Bug fixing: changing tests to compare utf-8 encoded binary streams

Changes in doc, license and naming constant

Adding median based predictions to ensembles

Bug fixing: multimodel median predictions failed

Adding support for median in multimodel's batch prediction method

Tests leftovers removed

Changing setup to ensure compatible Python and requests versions

Adding samples as File generator resources

Updating version to 3.0.1