0.12.0

CHANGELOG

New features
Multimodal data integration by graph merging. Integrated graphs are supported by run_umap, run_clustering and run_leiden_clustering
Added smart_label method to DataStore

Added tutorials
Expanded the multi-modal data handling tutorial to demonstrate graph integration functionality
Added MNIST dataset notebook

Improvements
MtxDirReader now supports custom index offset
Warning suppression for division by zero in run_umap
plot_cluster_tree supports non-integer labels

Dev notes
.codecov.yml moved to github dir and edited to not show checks along with github tests
removed push_pypi.sh from root as pypi released are now handled by github actions