v0.7.0

New features

• Add a FileGenerator to iterate over local problem instances #174
• Add Hutter2011 observation function #192
• Add PrimalIntegral, DualIntegral, PrimalDualIntegral reward functions #144
• Add BranchingSum multi-variable branching environment #181
• Add PrimalSearch environment #183
• Terminal states (done==True) always return None as an observation #199
• Rewards are now extracted before observations, to account for the observation extraction cost between two rewards #212

Bug fixes

• Fixed a bug in IndependentSetGenerator where the greedy clique strengthening was not as greedy as it should.
• Documentation typos