v1.2 02/2021

New features:

• Checkpointing: allows to restart an analysis in case of a crash (by @makavelj)
• Random seed for Data class: sets seed to control generation of data permutations (by @makavelj)

Fixes:

• OpenCl estimators crash for certain problem instances (#30, #10)
• Minor fixes:
  • Compatibility with latest networkx version (#55)
  • Export of DiGraph objects for nodes without links (#50)