Backpropagate some PR #139
Description
The following PR need to be backpropagated to the version 0.1.x
- PR [MRG] Address #131 - Replace nonzero by flatnonzero whenever possible #132
- PR [MRG] Address issue #129 - Add specific stopping criteria for the RENN #135
- PR [MRG] Address issue #137 - Error of the indices return by CNN #138
- PR [MRG] Address issue #142 - Solve problem with max subset to one in BC #143