slice_omics_datasets Doesn't work

[SundousHussein]

I see the columns in the original dataset and the adjacency matrix but the code still fails on missing_nodes. To reproduce the issue, please run the BioNeuralNet code in the latest copy of the notebook that I shared via email.

[ramosv]

Did we address this as the lab last time we worked on the code or is this still pending?

[ramosv]

I fixed this issue in #66